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15d21e7d38
gecko/gfx/gl/GLContext.cpp
Chris Lord 15d21e7d38 Bug 737434 - Reuse tiles when resizing tiled textures. r=bgirard 
Instead of scrapping all tiles when a tiled texture is resized, reuse as many
tiles as possible. Strictly speaking, more tiles could be reused, but the
selected reuse strategy maintains the spacial structure of the texture, and we
don't often resize in such a way as to make this inefficient.
2012-03-23 11:30:57 +00:00

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* the Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2009
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Vladimir Vukicevic <vladimir@pobox.com>
* Mark Steele <mwsteele@gmail.com>
* Bas Schouten <bschouten@mozilla.com>
* Jeff Gilbert <jgilbert@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include <string.h>
#include <stdio.h>
#include "prlink.h"
#include "prenv.h"
#include "nsThreadUtils.h"
#include "gfxPlatform.h"
#include "GLContext.h"
#include "GLContextProvider.h"
#include "gfxCrashReporterUtils.h"
#include "gfxUtils.h"
#include "mozilla/Preferences.h"
#include "mozilla/Util.h" // for DebugOnly
using namespace mozilla::gfx;
namespace mozilla {
namespace gl {
#ifdef DEBUG
PRUintn GLContext::sCurrentGLContextTLS = -1;
#endif
PRUint32 GLContext::sDebugMode = 0;
// define this here since it's global to GLContextProvider, not any
// specific implementation
const ContextFormat ContextFormat::BasicRGBA32Format(ContextFormat::BasicRGBA32);
#define MAX_SYMBOL_LENGTH 128
#define MAX_SYMBOL_NAMES 5
// should match the order of GLExtensions
static const char *sExtensionNames[] = {
"GL_EXT_framebuffer_object",
"GL_ARB_framebuffer_object",
"GL_ARB_texture_rectangle",
"GL_EXT_bgra",
"GL_EXT_texture_format_BGRA8888",
"GL_OES_depth24",
"GL_OES_depth32",
"GL_OES_stencil8",
"GL_OES_texture_npot",
"GL_OES_depth_texture",
"GL_OES_packed_depth_stencil",
"GL_IMG_read_format",
"GL_EXT_read_format_bgra",
"GL_APPLE_client_storage",
"GL_ARB_texture_non_power_of_two",
"GL_ARB_pixel_buffer_object",
"GL_ARB_ES2_compatibility",
"GL_OES_texture_float",
"GL_ARB_texture_float",
"GL_EXT_unpack_subimage",
"GL_OES_standard_derivatives",
"GL_EXT_texture_filter_anisotropic",
"GL_EXT_framebuffer_blit",
"GL_ANGLE_framebuffer_blit",
"GL_EXT_framebuffer_multisample",
"GL_ANGLE_framebuffer_multisample",
"GL_OES_rgb8_rgba8",
"GL_ARB_robustness",
"GL_EXT_robustness",
NULL
};
/*
* XXX - we should really know the ARB/EXT variants of these
* instead of only handling the symbol if it's exposed directly.
*/
bool
GLContext::InitWithPrefix(const char *prefix, bool trygl)
{
ScopedGfxFeatureReporter reporter("GL Context");
if (mInitialized) {
reporter.SetSuccessful();
return true;
}
SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fActiveTexture, { "ActiveTexture", "ActiveTextureARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fAttachShader, { "AttachShader", "AttachShaderARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fBindAttribLocation, { "BindAttribLocation", "BindAttribLocationARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fBindBuffer, { "BindBuffer", "BindBufferARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fBindTexture, { "BindTexture", "BindTextureARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fBlendColor, { "BlendColor", NULL } },
{ (PRFuncPtr*) &mSymbols.fBlendEquation, { "BlendEquation", NULL } },
{ (PRFuncPtr*) &mSymbols.fBlendEquationSeparate, { "BlendEquationSeparate", "BlendEquationSeparateEXT", NULL } },
{ (PRFuncPtr*) &mSymbols.fBlendFunc, { "BlendFunc", NULL } },
{ (PRFuncPtr*) &mSymbols.fBlendFuncSeparate, { "BlendFuncSeparate", "BlendFuncSeparateEXT", NULL } },
{ (PRFuncPtr*) &mSymbols.fBufferData, { "BufferData", NULL } },
{ (PRFuncPtr*) &mSymbols.fBufferSubData, { "BufferSubData", NULL } },
{ (PRFuncPtr*) &mSymbols.fClear, { "Clear", NULL } },
{ (PRFuncPtr*) &mSymbols.fClearColor, { "ClearColor", NULL } },
{ (PRFuncPtr*) &mSymbols.fClearStencil, { "ClearStencil", NULL } },
{ (PRFuncPtr*) &mSymbols.fColorMask, { "ColorMask", NULL } },
{ (PRFuncPtr*) &mSymbols.fCullFace, { "CullFace", NULL } },
{ (PRFuncPtr*) &mSymbols.fDetachShader, { "DetachShader", "DetachShaderARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fDepthFunc, { "DepthFunc", NULL } },
{ (PRFuncPtr*) &mSymbols.fDepthMask, { "DepthMask", NULL } },
{ (PRFuncPtr*) &mSymbols.fDisable, { "Disable", NULL } },
{ (PRFuncPtr*) &mSymbols.fDisableVertexAttribArray, { "DisableVertexAttribArray", "DisableVertexAttribArrayARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fDrawArrays, { "DrawArrays", NULL } },
{ (PRFuncPtr*) &mSymbols.fDrawElements, { "DrawElements", NULL } },
{ (PRFuncPtr*) &mSymbols.fEnable, { "Enable", NULL } },
{ (PRFuncPtr*) &mSymbols.fEnableVertexAttribArray, { "EnableVertexAttribArray", "EnableVertexAttribArrayARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fFinish, { "Finish", NULL } },
{ (PRFuncPtr*) &mSymbols.fFlush, { "Flush", NULL } },
{ (PRFuncPtr*) &mSymbols.fFrontFace, { "FrontFace", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetActiveAttrib, { "GetActiveAttrib", "GetActiveAttribARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetActiveUniform, { "GetActiveUniform", "GetActiveUniformARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetAttachedShaders, { "GetAttachedShaders", "GetAttachedShadersARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetAttribLocation, { "GetAttribLocation", "GetAttribLocationARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetIntegerv, { "GetIntegerv", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetFloatv, { "GetFloatv", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetBooleanv, { "GetBooleanv", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetBufferParameteriv, { "GetBufferParameteriv", "GetBufferParameterivARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetError, { "GetError", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetProgramiv, { "GetProgramiv", "GetProgramivARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetProgramInfoLog, { "GetProgramInfoLog", "GetProgramInfoLogARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fTexParameteri, { "TexParameteri", NULL } },
{ (PRFuncPtr*) &mSymbols.fTexParameterf, { "TexParameterf", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetString, { "GetString", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetTexParameterfv, { "GetTexParameterfv", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetTexParameteriv, { "GetTexParameteriv", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetUniformfv, { "GetUniformfv", "GetUniformfvARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetUniformiv, { "GetUniformiv", "GetUniformivARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetUniformLocation, { "GetUniformLocation", "GetUniformLocationARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetVertexAttribfv, { "GetVertexAttribfv", "GetVertexAttribfvARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetVertexAttribiv, { "GetVertexAttribiv", "GetVertexAttribivARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fHint, { "Hint", NULL } },
{ (PRFuncPtr*) &mSymbols.fIsBuffer, { "IsBuffer", "IsBufferARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fIsEnabled, { "IsEnabled", NULL } },
{ (PRFuncPtr*) &mSymbols.fIsProgram, { "IsProgram", "IsProgramARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fIsShader, { "IsShader", "IsShaderARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fIsTexture, { "IsTexture", "IsTextureARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fLineWidth, { "LineWidth", NULL } },
{ (PRFuncPtr*) &mSymbols.fLinkProgram, { "LinkProgram", "LinkProgramARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fPixelStorei, { "PixelStorei", NULL } },
{ (PRFuncPtr*) &mSymbols.fPolygonOffset, { "PolygonOffset", NULL } },
{ (PRFuncPtr*) &mSymbols.fReadPixels, { "ReadPixels", NULL } },
{ (PRFuncPtr*) &mSymbols.fSampleCoverage, { "SampleCoverage", NULL } },
{ (PRFuncPtr*) &mSymbols.fScissor, { "Scissor", NULL } },
{ (PRFuncPtr*) &mSymbols.fStencilFunc, { "StencilFunc", NULL } },
{ (PRFuncPtr*) &mSymbols.fStencilFuncSeparate, { "StencilFuncSeparate", "StencilFuncSeparateEXT", NULL } },
{ (PRFuncPtr*) &mSymbols.fStencilMask, { "StencilMask", NULL } },
{ (PRFuncPtr*) &mSymbols.fStencilMaskSeparate, { "StencilMaskSeparate", "StencilMaskSeparateEXT", NULL } },
{ (PRFuncPtr*) &mSymbols.fStencilOp, { "StencilOp", NULL } },
{ (PRFuncPtr*) &mSymbols.fStencilOpSeparate, { "StencilOpSeparate", "StencilOpSeparateEXT", NULL } },
{ (PRFuncPtr*) &mSymbols.fTexImage2D, { "TexImage2D", NULL } },
{ (PRFuncPtr*) &mSymbols.fTexSubImage2D, { "TexSubImage2D", NULL } },
{ (PRFuncPtr*) &mSymbols.fUniform1f, { "Uniform1f", NULL } },
{ (PRFuncPtr*) &mSymbols.fUniform1fv, { "Uniform1fv", NULL } },
{ (PRFuncPtr*) &mSymbols.fUniform1i, { "Uniform1i", NULL } },
{ (PRFuncPtr*) &mSymbols.fUniform1iv, { "Uniform1iv", NULL } },
{ (PRFuncPtr*) &mSymbols.fUniform2f, { "Uniform2f", NULL } },
{ (PRFuncPtr*) &mSymbols.fUniform2fv, { "Uniform2fv", NULL } },
{ (PRFuncPtr*) &mSymbols.fUniform2i, { "Uniform2i", NULL } },
{ (PRFuncPtr*) &mSymbols.fUniform2iv, { "Uniform2iv", NULL } },
{ (PRFuncPtr*) &mSymbols.fUniform3f, { "Uniform3f", NULL } },
{ (PRFuncPtr*) &mSymbols.fUniform3fv, { "Uniform3fv", NULL } },
{ (PRFuncPtr*) &mSymbols.fUniform3i, { "Uniform3i", NULL } },
{ (PRFuncPtr*) &mSymbols.fUniform3iv, { "Uniform3iv", NULL } },
{ (PRFuncPtr*) &mSymbols.fUniform4f, { "Uniform4f", NULL } },
{ (PRFuncPtr*) &mSymbols.fUniform4fv, { "Uniform4fv", NULL } },
{ (PRFuncPtr*) &mSymbols.fUniform4i, { "Uniform4i", NULL } },
{ (PRFuncPtr*) &mSymbols.fUniform4iv, { "Uniform4iv", NULL } },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix2fv, { "UniformMatrix2fv", NULL } },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix3fv, { "UniformMatrix3fv", NULL } },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix4fv, { "UniformMatrix4fv", NULL } },
{ (PRFuncPtr*) &mSymbols.fUseProgram, { "UseProgram", NULL } },
{ (PRFuncPtr*) &mSymbols.fValidateProgram, { "ValidateProgram", NULL } },
{ (PRFuncPtr*) &mSymbols.fVertexAttribPointer, { "VertexAttribPointer", NULL } },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib1f, { "VertexAttrib1f", NULL } },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib2f, { "VertexAttrib2f", NULL } },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib3f, { "VertexAttrib3f", NULL } },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib4f, { "VertexAttrib4f", NULL } },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib1fv, { "VertexAttrib1fv", NULL } },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib2fv, { "VertexAttrib2fv", NULL } },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib3fv, { "VertexAttrib3fv", NULL } },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib4fv, { "VertexAttrib4fv", NULL } },
{ (PRFuncPtr*) &mSymbols.fViewport, { "Viewport", NULL } },
{ (PRFuncPtr*) &mSymbols.fCompileShader, { "CompileShader", NULL } },
{ (PRFuncPtr*) &mSymbols.fCopyTexImage2D, { "CopyTexImage2D", NULL } },
{ (PRFuncPtr*) &mSymbols.fCopyTexSubImage2D, { "CopyTexSubImage2D", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetShaderiv, { "GetShaderiv", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetShaderInfoLog, { "GetShaderInfoLog", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetShaderSource, { "GetShaderSource", NULL } },
{ (PRFuncPtr*) &mSymbols.fShaderSource, { "ShaderSource", NULL } },
{ (PRFuncPtr*) &mSymbols.fVertexAttribPointer, { "VertexAttribPointer", NULL } },
{ (PRFuncPtr*) &mSymbols.fBindFramebuffer, { "BindFramebuffer", "BindFramebufferEXT", NULL } },
{ (PRFuncPtr*) &mSymbols.fBindRenderbuffer, { "BindRenderbuffer", "BindRenderbufferEXT", NULL } },
{ (PRFuncPtr*) &mSymbols.fCheckFramebufferStatus, { "CheckFramebufferStatus", "CheckFramebufferStatusEXT", NULL } },
{ (PRFuncPtr*) &mSymbols.fFramebufferRenderbuffer, { "FramebufferRenderbuffer", "FramebufferRenderbufferEXT", NULL } },
{ (PRFuncPtr*) &mSymbols.fFramebufferTexture2D, { "FramebufferTexture2D", "FramebufferTexture2DEXT", NULL } },
{ (PRFuncPtr*) &mSymbols.fGenerateMipmap, { "GenerateMipmap", "GenerateMipmapEXT", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetFramebufferAttachmentParameteriv, { "GetFramebufferAttachmentParameteriv", "GetFramebufferAttachmentParameterivEXT", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetRenderbufferParameteriv, { "GetRenderbufferParameteriv", "GetRenderbufferParameterivEXT", NULL } },
{ (PRFuncPtr*) &mSymbols.fIsFramebuffer, { "IsFramebuffer", "IsFramebufferEXT", NULL } },
{ (PRFuncPtr*) &mSymbols.fIsRenderbuffer, { "IsRenderbuffer", "IsRenderbufferEXT", NULL } },
{ (PRFuncPtr*) &mSymbols.fRenderbufferStorage, { "RenderbufferStorage", "RenderbufferStorageEXT", NULL } },
{ (PRFuncPtr*) &mSymbols.fGenBuffers, { "GenBuffers", "GenBuffersARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fGenTextures, { "GenTextures", NULL } },
{ (PRFuncPtr*) &mSymbols.fCreateProgram, { "CreateProgram", "CreateProgramARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fCreateShader, { "CreateShader", "CreateShaderARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fGenFramebuffers, { "GenFramebuffers", "GenFramebuffersEXT", NULL } },
{ (PRFuncPtr*) &mSymbols.fGenRenderbuffers, { "GenRenderbuffers", "GenRenderbuffersEXT", NULL } },
{ (PRFuncPtr*) &mSymbols.fDeleteBuffers, { "DeleteBuffers", "DeleteBuffersARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fDeleteTextures, { "DeleteTextures", "DeleteTexturesARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fDeleteProgram, { "DeleteProgram", "DeleteProgramARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fDeleteShader, { "DeleteShader", "DeleteShaderARB", NULL } },
{ (PRFuncPtr*) &mSymbols.fDeleteFramebuffers, { "DeleteFramebuffers", "DeleteFramebuffersEXT", NULL } },
{ (PRFuncPtr*) &mSymbols.fDeleteRenderbuffers, { "DeleteRenderbuffers", "DeleteRenderbuffersEXT", NULL } },
{ NULL, { NULL } },
};
mInitialized = LoadSymbols(&symbols[0], trygl, prefix);
// Load OpenGL ES 2.0 symbols, or desktop if we aren't using ES 2.
if (mInitialized) {
if (mIsGLES2) {
SymLoadStruct symbols_ES2[] = {
{ (PRFuncPtr*) &mSymbols.fGetShaderPrecisionFormat, { "GetShaderPrecisionFormat", NULL } },
{ (PRFuncPtr*) &mSymbols.fClearDepthf, { "ClearDepthf", NULL } },
{ (PRFuncPtr*) &mSymbols.fDepthRangef, { "DepthRangef", NULL } },
{ NULL, { NULL } },
};
if (!LoadSymbols(&symbols_ES2[0], trygl, prefix)) {
NS_RUNTIMEABORT("OpenGL ES 2.0 supported, but symbols could not be loaded.");
mInitialized = false;
}
} else {
SymLoadStruct symbols_desktop[] = {
{ (PRFuncPtr*) &mSymbols.fClearDepth, { "ClearDepth", NULL } },
{ (PRFuncPtr*) &mSymbols.fDepthRange, { "DepthRange", NULL } },
{ (PRFuncPtr*) &mSymbols.fReadBuffer, { "ReadBuffer", NULL } },
{ (PRFuncPtr*) &mSymbols.fMapBuffer, { "MapBuffer", NULL } },
{ (PRFuncPtr*) &mSymbols.fUnmapBuffer, { "UnmapBuffer", NULL } },
{ NULL, { NULL } },
};
if (!LoadSymbols(&symbols_desktop[0], trygl, prefix)) {
NS_RUNTIMEABORT("Desktop symbols failed to load.");
mInitialized = false;
}
}
}
const char *glVendorString;
const char *glRendererString;
if (mInitialized) {
// The order of these strings must match up with the order of the enum
// defined in GLContext.h for vendor IDs
glVendorString = (const char *)fGetString(LOCAL_GL_VENDOR);
const char *vendorMatchStrings[VendorOther] = {
"Intel",
"NVIDIA",
"ATI",
"Qualcomm",
"Imagination"
};
mVendor = VendorOther;
for (int i = 0; i < VendorOther; ++i) {
if (DoesStringMatch(glVendorString, vendorMatchStrings[i])) {
mVendor = i;
break;
}
}
// The order of these strings must match up with the order of the enum
// defined in GLContext.h for renderer IDs
glRendererString = (const char *)fGetString(LOCAL_GL_RENDERER);
const char *rendererMatchStrings[RendererOther] = {
"Adreno 200",
"Adreno 205",
"PowerVR SGX 530",
"PowerVR SGX 540",
};
mRenderer = RendererOther;
for (int i = 0; i < RendererOther; ++i) {
if (DoesStringMatch(glRendererString, rendererMatchStrings[i])) {
mRenderer = i;
break;
}
}
}
if (mInitialized) {
#ifdef DEBUG
static bool once = false;
if (!once) {
const char *vendors[VendorOther] = {
"Intel",
"NVIDIA",
"ATI",
"Qualcomm"
};
once = true;
if (mVendor < VendorOther) {
printf_stderr("OpenGL vendor ('%s') recognized as: %s\n",
glVendorString, vendors[mVendor]);
} else {
printf_stderr("OpenGL vendor ('%s') unrecognized\n", glVendorString);
}
}
#endif
InitExtensions();
NS_ASSERTION(!IsExtensionSupported(GLContext::ARB_pixel_buffer_object) ||
(mSymbols.fMapBuffer && mSymbols.fUnmapBuffer),
"ARB_pixel_buffer_object supported without glMapBuffer/UnmapBuffer being available!");
if (SupportsRobustness()) {
if (IsExtensionSupported(ARB_robustness)) {
SymLoadStruct robustnessSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetGraphicsResetStatus, { "GetGraphicsResetStatusARB", NULL } },
{ NULL, { NULL } },
};
if (!LoadSymbols(&robustnessSymbols[0], trygl, prefix)) {
NS_RUNTIMEABORT("GL supports ARB_robustness without supplying GetGraphicsResetStatusARB.");
mInitialized = false;
} else {
mHasRobustness = true;
}
} else if (IsExtensionSupported(EXT_robustness)) {
SymLoadStruct robustnessSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetGraphicsResetStatus, { "GetGraphicsResetStatusEXT", NULL } },
{ NULL, { NULL } },
};
if (!LoadSymbols(&robustnessSymbols[0], trygl, prefix)) {
NS_RUNTIMEABORT("GL supports EGL_robustness without supplying GetGraphicsResetStatusEXT.");
mInitialized = false;
} else {
mHasRobustness = true;
}
}
}
// Check for aux symbols based on extensions
if (IsExtensionSupported(GLContext::ANGLE_framebuffer_blit) ||
IsExtensionSupported(GLContext::EXT_framebuffer_blit)) {
SymLoadStruct auxSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fBlitFramebuffer, { "BlitFramebuffer", "BlitFramebufferEXT", "BlitFramebufferANGLE", NULL } },
{ NULL, { NULL } },
};
if (!LoadSymbols(&auxSymbols[0], trygl, prefix)) {
NS_RUNTIMEABORT("GL supports framebuffer_blit without supplying glBlitFramebuffer");
mInitialized = false;
}
}
if (IsExtensionSupported(GLContext::ANGLE_framebuffer_multisample) ||
IsExtensionSupported(GLContext::EXT_framebuffer_multisample)) {
SymLoadStruct auxSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fRenderbufferStorageMultisample, { "RenderbufferStorageMultisample", "RenderbufferStorageMultisampleEXT", "RenderbufferStorageMultisampleANGLE", NULL } },
{ NULL, { NULL } },
};
if (!LoadSymbols(&auxSymbols[0], trygl, prefix)) {
NS_RUNTIMEABORT("GL supports framebuffer_multisample without supplying glRenderbufferStorageMultisample");
mInitialized = false;
}
}
// Load developer symbols, don't fail if we can't find them.
SymLoadStruct auxSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetTexImage, { "GetTexImage", NULL } },
{ (PRFuncPtr*) &mSymbols.fGetTexLevelParameteriv, { "GetTexLevelParameteriv", NULL } },
{ NULL, { NULL } },
};
LoadSymbols(&auxSymbols[0], trygl, prefix);
}
if (mInitialized) {
GLint v[4];
fGetIntegerv(LOCAL_GL_SCISSOR_BOX, v);
mScissorStack.AppendElement(nsIntRect(v[0], v[1], v[2], v[3]));
fGetIntegerv(LOCAL_GL_VIEWPORT, v);
mViewportStack.AppendElement(nsIntRect(v[0], v[1], v[2], v[3]));
fGetIntegerv(LOCAL_GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
fGetIntegerv(LOCAL_GL_MAX_RENDERBUFFER_SIZE, &mMaxRenderbufferSize);
mMaxTextureImageSize = mMaxTextureSize;
UpdateActualFormat();
}
#ifdef DEBUG
if (PR_GetEnv("MOZ_GL_DEBUG"))
sDebugMode |= DebugEnabled;
// enables extra verbose output, informing of the start and finish of every GL call.
// useful e.g. to record information to investigate graphics system crashes/lockups
if (PR_GetEnv("MOZ_GL_DEBUG_VERBOSE"))
sDebugMode |= DebugTrace;
// aborts on GL error. Can be useful to debug quicker code that is known not to generate any GL error in principle.
if (PR_GetEnv("MOZ_GL_DEBUG_ABORT_ON_ERROR"))
sDebugMode |= DebugAbortOnError;
#endif
if (mInitialized)
reporter.SetSuccessful();
else {
// if initialization fails, ensure all symbols are zero, to avoid hard-to-understand bugs
mSymbols.Zero();
NS_WARNING("InitWithPrefix failed!");
}
return mInitialized;
}
void
GLContext::InitExtensions()
{
MakeCurrent();
const GLubyte *extensions = fGetString(LOCAL_GL_EXTENSIONS);
if (!extensions)
return;
char *exts = strdup((char *)extensions);
#ifdef DEBUG
static bool once = false;
#else
const bool once = true;
#endif
if (!once) {
printf_stderr("GL extensions: %s\n", exts);
}
char *s = exts;
bool done = false;
while (!done) {
char *space = strchr(s, ' ');
if (space) {
*space = '\0';
} else {
done = true;
}
for (int i = 0; sExtensionNames[i]; ++i) {
if (strcmp(s, sExtensionNames[i]) == 0) {
if (!once) {
printf_stderr("Found extension %s\n", s);
}
mAvailableExtensions[i] = 1;
}
}
s = space+1;
}
free(exts);
#ifdef DEBUG
once = true;
#endif
}
// Take texture data in a given buffer and copy it into a larger buffer,
// padding out the edge pixels for filtering if necessary
static void
CopyAndPadTextureData(const GLvoid* srcBuffer,
GLvoid* dstBuffer,
GLsizei srcWidth, GLsizei srcHeight,
GLsizei dstWidth, GLsizei dstHeight,
GLsizei stride, GLint pixelsize)
{
unsigned char *rowDest = static_cast<unsigned char*>(dstBuffer);
const unsigned char *source = static_cast<const unsigned char*>(srcBuffer);
for (GLsizei h = 0; h < srcHeight; ++h) {
memcpy(rowDest, source, srcWidth * pixelsize);
rowDest += dstWidth * pixelsize;
source += stride;
}
GLsizei padHeight = srcHeight;
// Pad out an extra row of pixels so that edge filtering doesn't use garbage data
if (dstHeight > srcHeight) {
memcpy(rowDest, source - stride, srcWidth * pixelsize);
padHeight++;
}
// Pad out an extra column of pixels
if (dstWidth > srcWidth) {
rowDest = static_cast<unsigned char*>(dstBuffer) + srcWidth * pixelsize;
for (GLsizei h = 0; h < padHeight; ++h) {
memcpy(rowDest, rowDest - pixelsize, pixelsize);
rowDest += dstWidth * pixelsize;
}
}
}
bool
GLContext::IsExtensionSupported(const char *extension)
{
return ListHasExtension(fGetString(LOCAL_GL_EXTENSIONS), extension);
}
// In both of these cases (for the Adreno at least) it is impossible
// to determine good or bad driver versions for POT texture uploads,
// so blacklist them all. Newer drivers use a different rendering
// string in the form "Adreno (TM) 200" and the drivers we've seen so
// far work fine with NPOT textures, so don't blacklist those until we
// have evidence of any problems with them.
bool
GLContext::CanUploadSubTextures()
{
// There are certain GPUs that we don't want to use glTexSubImage2D on
// because that function can be very slow and/or buggy
if (Renderer() == RendererAdreno200 || Renderer() == RendererAdreno205)
return false;
// On PowerVR glTexSubImage does a readback, so it will be slower
// than just doing a glTexImage2D() directly. i.e. 26ms vs 10ms
if (Renderer() == RendererSGX540 || Renderer() == RendererSGX530)
return false;
return true;
}
bool
GLContext::CanUploadNonPowerOfTwo()
{
static bool sPowerOfTwoForced;
static bool sPowerOfTwoPrefCached = false;
if (!sPowerOfTwoPrefCached) {
sPowerOfTwoPrefCached = true;
mozilla::Preferences::AddBoolVarCache(&sPowerOfTwoForced,
"gfx.textures.poweroftwo.force-enabled");
}
// Some GPUs driver crash when uploading non power of two 565 textures.
return sPowerOfTwoForced ? false : (Renderer() != RendererAdreno200 &&
Renderer() != RendererAdreno205);
}
bool
GLContext::WantsSmallTiles()
{
#ifdef MOZ_WIDGET_ANDROID
// We must use small tiles for good performance if we can't use
// glTexSubImage2D() for some reason.
if (!CanUploadSubTextures())
return true;
// We can't use small tiles on the SGX 540, because of races in texture upload.
if (Renderer() == RendererSGX540)
return false;
// Don't use small tiles otherwise. (If we implement incremental texture upload,
// then we will want to revisit this.)
return false;
#else
return false;
#endif
}
// Common code for checking for both GL extensions and GLX extensions.
bool
GLContext::ListHasExtension(const GLubyte *extensions, const char *extension)
{
// fix bug 612572 - we were crashing as we were calling this function with extensions==null
if (extensions == nsnull || extension == nsnull)
return false;
const GLubyte *start;
GLubyte *where, *terminator;
/* Extension names should not have spaces. */
where = (GLubyte *) strchr(extension, ' ');
if (where || *extension == '\0')
return false;
/*
* It takes a bit of care to be fool-proof about parsing the
* OpenGL extensions string. Don't be fooled by sub-strings,
* etc.
*/
start = extensions;
for (;;) {
where = (GLubyte *) strstr((const char *) start, extension);
if (!where) {
break;
}
terminator = where + strlen(extension);
if (where == start || *(where - 1) == ' ') {
if (*terminator == ' ' || *terminator == '\0') {
return true;
}
}
start = terminator;
}
return false;
}
already_AddRefed<TextureImage>
GLContext::CreateTextureImage(const nsIntSize& aSize,
TextureImage::ContentType aContentType,
GLenum aWrapMode,
bool aUseNearestFilter)
{
MakeCurrent();
GLuint texture;
fGenTextures(1, &texture);
fActiveTexture(LOCAL_GL_TEXTURE0);
fBindTexture(LOCAL_GL_TEXTURE_2D, texture);
GLint texfilter = aUseNearestFilter ? LOCAL_GL_NEAREST : LOCAL_GL_LINEAR;
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER, texfilter);
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER, texfilter);
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_S, aWrapMode);
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_T, aWrapMode);
return CreateBasicTextureImage(texture, aSize, aWrapMode, aContentType, this);
}
void GLContext::ApplyFilterToBoundTexture(gfxPattern::GraphicsFilter aFilter)
{
if (aFilter == gfxPattern::FILTER_NEAREST) {
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER, LOCAL_GL_NEAREST);
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER, LOCAL_GL_NEAREST);
} else {
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER, LOCAL_GL_LINEAR);
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER, LOCAL_GL_LINEAR);
}
}
BasicTextureImage::~BasicTextureImage()
{
GLContext *ctx = mGLContext;
if (ctx->IsDestroyed() || !NS_IsMainThread()) {
ctx = ctx->GetSharedContext();
}
// If we have a context, then we need to delete the texture;
// if we don't have a context (either real or shared),
// then they went away when the contex was deleted, because it
// was the only one that had access to it.
if (ctx && !ctx->IsDestroyed()) {
mGLContext->MakeCurrent();
mGLContext->fDeleteTextures(1, &mTexture);
}
}
gfxASurface*
BasicTextureImage::BeginUpdate(nsIntRegion& aRegion)
{
NS_ASSERTION(!mUpdateSurface, "BeginUpdate() without EndUpdate()?");
// determine the region the client will need to repaint
if (mGLContext->CanUploadSubTextures()) {
GetUpdateRegion(aRegion);
} else {
aRegion = nsIntRect(nsIntPoint(0, 0), mSize);
}
mUpdateRegion = aRegion;
nsIntRect rgnSize = mUpdateRegion.GetBounds();
if (!nsIntRect(nsIntPoint(0, 0), mSize).Contains(rgnSize)) {
NS_ERROR("update outside of image");
return NULL;
}
ImageFormat format =
(GetContentType() == gfxASurface::CONTENT_COLOR) ?
gfxASurface::ImageFormatRGB24 : gfxASurface::ImageFormatARGB32;
mUpdateSurface =
GetSurfaceForUpdate(gfxIntSize(rgnSize.width, rgnSize.height), format);
if (!mUpdateSurface || mUpdateSurface->CairoStatus()) {
mUpdateSurface = NULL;
return NULL;
}
mUpdateSurface->SetDeviceOffset(gfxPoint(-rgnSize.x, -rgnSize.y));
return mUpdateSurface;
}
void
BasicTextureImage::GetUpdateRegion(nsIntRegion& aForRegion)
{
// if the texture hasn't been initialized yet, or something important
// changed, we need to recreate our backing surface and force the
// client to paint everything
if (mTextureState != Valid)
aForRegion = nsIntRect(nsIntPoint(0, 0), mSize);
}
void
BasicTextureImage::EndUpdate()
{
NS_ASSERTION(!!mUpdateSurface, "EndUpdate() without BeginUpdate()?");
// FIXME: this is the slow boat. Make me fast (with GLXPixmap?).
// Undo the device offset that BeginUpdate set; doesn't much matter for us here,
// but important if we ever do anything directly with the surface.
mUpdateSurface->SetDeviceOffset(gfxPoint(0, 0));
bool relative = FinishedSurfaceUpdate();
mShaderType =
mGLContext->UploadSurfaceToTexture(mUpdateSurface,
mUpdateRegion,
mTexture,
mTextureState == Created,
mUpdateOffset,
relative);
FinishedSurfaceUpload();
mUpdateSurface = nsnull;
mTextureState = Valid;
}
void
BasicTextureImage::BindTexture(GLenum aTextureUnit)
{
mGLContext->fActiveTexture(aTextureUnit);
mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
mGLContext->fActiveTexture(LOCAL_GL_TEXTURE0);
}
void
BasicTextureImage::ApplyFilter()
{
mGLContext->ApplyFilterToBoundTexture(mFilter);
}
already_AddRefed<gfxASurface>
BasicTextureImage::GetSurfaceForUpdate(const gfxIntSize& aSize, ImageFormat aFmt)
{
return gfxPlatform::GetPlatform()->
CreateOffscreenSurface(aSize, gfxASurface::ContentFromFormat(aFmt));
}
bool
BasicTextureImage::FinishedSurfaceUpdate()
{
return false;
}
void
BasicTextureImage::FinishedSurfaceUpload()
{
}
bool
BasicTextureImage::DirectUpdate(gfxASurface* aSurf, const nsIntRegion& aRegion, const nsIntPoint& aFrom /* = nsIntPoint(0, 0) */)
{
nsIntRect bounds = aRegion.GetBounds();
nsIntRegion region;
if (mTextureState != Valid) {
bounds = nsIntRect(0, 0, mSize.width, mSize.height);
region = nsIntRegion(bounds);
} else {
region = aRegion;
}
mShaderType =
mGLContext->UploadSurfaceToTexture(aSurf,
region,
mTexture,
mTextureState == Created,
bounds.TopLeft() + aFrom,
false);
mTextureState = Valid;
return true;
}
void
BasicTextureImage::Resize(const nsIntSize& aSize)
{
NS_ASSERTION(!mUpdateSurface, "Resize() while in update?");
mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
mGLContext->fTexImage2D(LOCAL_GL_TEXTURE_2D,
0,
LOCAL_GL_RGBA,
aSize.width,
aSize.height,
0,
LOCAL_GL_RGBA,
LOCAL_GL_UNSIGNED_BYTE,
NULL);
mTextureState = Allocated;
mSize = aSize;
}
TiledTextureImage::TiledTextureImage(GLContext* aGL,
nsIntSize aSize,
TextureImage::ContentType aContentType,
bool aUseNearestFilter)
: TextureImage(aSize, LOCAL_GL_CLAMP_TO_EDGE, aContentType, aUseNearestFilter)
, mCurrentImage(0)
, mInUpdate(false)
, mRows(0)
, mColumns(0)
, mGL(aGL)
, mUseNearestFilter(aUseNearestFilter)
, mTextureState(Created)
, mIterationCallback(nsnull)
{
mTileSize = mGL->WantsSmallTiles() ? 256 : mGL->GetMaxTextureSize();
if (aSize != nsIntSize(0,0)) {
Resize(aSize);
}
}
TiledTextureImage::~TiledTextureImage()
{
}
bool
TiledTextureImage::DirectUpdate(gfxASurface* aSurf, const nsIntRegion& aRegion, const nsIntPoint& aFrom /* = nsIntPoint(0, 0) */)
{
nsIntRegion region;
if (mTextureState != Valid) {
nsIntRect bounds = nsIntRect(0, 0, mSize.width, mSize.height);
region = nsIntRegion(bounds);
} else {
region = aRegion;
}
bool result = true;
int oldCurrentImage = mCurrentImage;
BeginTileIteration();
do {
nsIntRect tileRect = GetTileRect();
int xPos = tileRect.x;
int yPos = tileRect.y;
nsIntRegion tileRegion;
tileRegion.And(region, tileRect); // intersect with tile
if (tileRegion.IsEmpty())
continue;
if (mGL->CanUploadSubTextures()) {
tileRegion.MoveBy(-xPos, -yPos); // translate into tile local space
} else {
// If sub-textures are unsupported, expand to tile boundaries
tileRect.x = tileRect.y = 0;
tileRegion = nsIntRegion(tileRect);
}
result &= mImages[mCurrentImage]->
DirectUpdate(aSurf, tileRegion, aFrom + nsIntPoint(xPos, yPos));
// Override a callback cancelling iteration if the texture wasn't valid.
// We need to force the update in that situation, or we may end up
// showing invalid/out-of-date texture data.
} while (NextTile() ||
(mTextureState != Valid && mCurrentImage < mImages.Length()));
mCurrentImage = oldCurrentImage;
mShaderType = mImages[0]->GetShaderProgramType();
mTextureState = Valid;
return result;
}
void
TiledTextureImage::GetUpdateRegion(nsIntRegion& aForRegion)
{
if (mTextureState != Valid) {
// if the texture hasn't been initialized yet, or something important
// changed, we need to recreate our backing surface and force the
// client to paint everything
aForRegion = nsIntRect(nsIntPoint(0, 0), mSize);
return;
}
nsIntRegion newRegion;
// We need to query each texture with the region it will be drawing and
// set aForRegion to be the combination of all of these regions
for (unsigned i = 0; i < mImages.Length(); i++) {
int xPos = (i % mColumns) * mTileSize;
int yPos = (i / mColumns) * mTileSize;
nsIntRect imageRect = nsIntRect(nsIntRect(nsIntPoint(xPos,yPos), mImages[i]->GetSize()));
if (aForRegion.Intersects(imageRect)) {
// Make a copy of the region
nsIntRegion subRegion;
subRegion.And(aForRegion, imageRect);
// Translate it into tile-space
subRegion.MoveBy(-xPos, -yPos);
// Query region
mImages[i]->GetUpdateRegion(subRegion);
// Translate back
subRegion.MoveBy(xPos, yPos);
// Add to the accumulated region
newRegion.Or(newRegion, subRegion);
}
}
aForRegion = newRegion;
}
gfxASurface*
TiledTextureImage::BeginUpdate(nsIntRegion& aRegion)
{
NS_ASSERTION(!mInUpdate, "nested update");
mInUpdate = true;
// Note, we don't call GetUpdateRegion here as if the updated region is
// fully contained in a single tile, we get to avoid iterating through
// the tiles again (and a little copying).
if (mTextureState != Valid)
{
// if the texture hasn't been initialized yet, or something important
// changed, we need to recreate our backing surface and force the
// client to paint everything
aRegion = nsIntRect(nsIntPoint(0, 0), mSize);
}
nsIntRect bounds = aRegion.GetBounds();
for (unsigned i = 0; i < mImages.Length(); i++) {
int xPos = (i % mColumns) * mTileSize;
int yPos = (i / mColumns) * mTileSize;
nsIntRegion imageRegion = nsIntRegion(nsIntRect(nsIntPoint(xPos,yPos), mImages[i]->GetSize()));
// a single Image can handle this update request
if (imageRegion.Contains(aRegion)) {
// adjust for tile offset
aRegion.MoveBy(-xPos, -yPos);
// forward the actual call
nsRefPtr<gfxASurface> surface = mImages[i]->BeginUpdate(aRegion);
// caller expects container space
aRegion.MoveBy(xPos, yPos);
// Correct the device offset
gfxPoint offset = surface->GetDeviceOffset();
surface->SetDeviceOffset(gfxPoint(offset.x - xPos,
offset.y - yPos));
// we don't have a temp surface
mUpdateSurface = nsnull;
// remember which image to EndUpdate
mCurrentImage = i;
return surface.get();
}
}
// Get the real updated region, taking into account the capabilities of
// each TextureImage tile
GetUpdateRegion(aRegion);
mUpdateRegion = aRegion;
bounds = aRegion.GetBounds();
// update covers multiple Images - create a temp surface to paint in
gfxASurface::gfxImageFormat format =
(GetContentType() == gfxASurface::CONTENT_COLOR) ?
gfxASurface::ImageFormatRGB24 : gfxASurface::ImageFormatARGB32;
mUpdateSurface = gfxPlatform::GetPlatform()->
CreateOffscreenSurface(gfxIntSize(bounds.width, bounds.height), gfxASurface::ContentFromFormat(format));
mUpdateSurface->SetDeviceOffset(gfxPoint(-bounds.x, -bounds.y));
return mUpdateSurface;
}
void
TiledTextureImage::EndUpdate()
{
NS_ASSERTION(mInUpdate, "EndUpdate not in update");
if (!mUpdateSurface) { // update was to a single TextureImage
mImages[mCurrentImage]->EndUpdate();
mInUpdate = false;
mTextureState = Valid;
mShaderType = mImages[mCurrentImage]->GetShaderProgramType();
return;
}
// upload tiles from temp surface
for (unsigned i = 0; i < mImages.Length(); i++) {
int xPos = (i % mColumns) * mTileSize;
int yPos = (i / mColumns) * mTileSize;
nsIntRect imageRect = nsIntRect(nsIntPoint(xPos,yPos), mImages[i]->GetSize());
nsIntRegion subregion;
subregion.And(mUpdateRegion, imageRect);
if (subregion.IsEmpty())
continue;
subregion.MoveBy(-xPos, -yPos); // Tile-local space
// copy tile from temp surface
gfxASurface* surf = mImages[i]->BeginUpdate(subregion);
nsRefPtr<gfxContext> ctx = new gfxContext(surf);
gfxUtils::ClipToRegion(ctx, subregion);
ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
ctx->SetSource(mUpdateSurface, gfxPoint(-xPos, -yPos));
ctx->Paint();
mImages[i]->EndUpdate();
}
mUpdateSurface = nsnull;
mInUpdate = false;
mShaderType = mImages[0]->GetShaderProgramType();
mTextureState = Valid;
}
void TiledTextureImage::BeginTileIteration()
{
mCurrentImage = 0;
}
bool TiledTextureImage::NextTile()
{
bool continueIteration = true;
if (mIterationCallback)
continueIteration = mIterationCallback(this, mCurrentImage,
mIterationCallbackData);
mCurrentImage++;
return continueIteration && (mCurrentImage < mImages.Length());
}
void TiledTextureImage::SetIterationCallback(TileIterationCallback aCallback,
void* aCallbackData)
{
mIterationCallback = aCallback;
mIterationCallbackData = aCallbackData;
}
nsIntRect TiledTextureImage::GetTileRect()
{
nsIntRect rect = mImages[mCurrentImage]->GetTileRect();
unsigned int xPos = (mCurrentImage % mColumns) * mTileSize;
unsigned int yPos = (mCurrentImage / mColumns) * mTileSize;
rect.MoveBy(xPos, yPos);
return rect;
}
void
TiledTextureImage::BindTexture(GLenum aTextureUnit)
{
mImages[mCurrentImage]->BindTexture(aTextureUnit);
}
void
TiledTextureImage::ApplyFilter()
{
mGL->ApplyFilterToBoundTexture(mFilter);
}
/*
* Resize, trying to reuse tiles. The reuse strategy is to decide on reuse per
* column. A tile on a column is reused if it hasn't changed size, otherwise it
* is discarded/replaced. Extra tiles on a column are pruned after iterating
* each column, and extra rows are pruned after iteration over the entire image
* finishes.
*/
void TiledTextureImage::Resize(const nsIntSize& aSize)
{
if (mSize == aSize && mTextureState != Created) {
return;
}
// calculate rows and columns, rounding up
unsigned int columns = (aSize.width + mTileSize - 1) / mTileSize;
unsigned int rows = (aSize.height + mTileSize - 1) / mTileSize;
// Iterate over old tile-store and insert/remove tiles as necessary
int row;
unsigned int i = 0;
for (row = 0; row < (int)rows; row++) {
// If we've gone beyond how many rows there were before, set mColumns to
// zero so that we only create new tiles.
if (row >= (int)mRows)
mColumns = 0;
// Similarly, if we're on the last row of old tiles and the height has
// changed, discard all tiles in that row.
// This will cause the pruning of columns not to work, but we don't need
// to worry about that, as no more tiles will be reused past this point
// anyway.
if ((row == (int)mRows - 1) && (aSize.height != mSize.height))
mColumns = 0;
int col;
for (col = 0; col < (int)columns; col++) {
nsIntSize size( // use tilesize first, then the remainder
(col+1) * mTileSize > (unsigned int)aSize.width ? aSize.width % mTileSize : mTileSize,
(row+1) * mTileSize > (unsigned int)aSize.height ? aSize.height % mTileSize : mTileSize);
bool replace = false;
// Check if we can re-use old tiles.
if (col < (int)mColumns) {
// Reuse an existing tile. If the tile is an end-tile and the
// width differs, replace it instead.
if (mSize.width != aSize.width) {
if (col == (int)mColumns - 1) {
// Tile at the end of the old column, replace it with
// a new one.
replace = true;
} else if (col == (int)columns - 1) {
// Tile at the end of the new column, create a new one.
} else {
// Before the last column on both the old and new sizes,
// reuse existing tile.
i++;
continue;
}
} else {
// Width hasn't changed, reuse existing tile.
i++;
continue;
}
}
// Create a new tile.
nsRefPtr<TextureImage> teximg =
mGL->TileGenFunc(size, mContentType, mUseNearestFilter);
if (replace)
mImages.ReplaceElementAt(i, &teximg.forget());
else
mImages.InsertElementAt(i, teximg.forget());
i++;
}
// Prune any unused tiles on the end of the column.
if (row < (int)mRows) {
for (col = (int)mColumns - col; col > 0; col--) {
mImages.RemoveElementAt(i);
}
}
}
// Prune any unused tiles at the end of the store.
unsigned int length = mImages.Length();
for (; i < length; i++)
mImages.RemoveElementAt(mImages.Length()-1);
// Reset tile-store properties.
mRows = rows;
mColumns = columns;
mSize = aSize;
mTextureState = Allocated;
}
PRUint32 TiledTextureImage::GetTileCount()
{
return mImages.Length();
}
bool
GLContext::ResizeOffscreenFBO(const gfxIntSize& aSize, const bool aUseReadFBO, const bool aDisableAA)
{
if (!IsOffscreenSizeAllowed(aSize))
return false;
MakeCurrent();
const bool alpha = mCreationFormat.alpha > 0;
const int depth = mCreationFormat.depth;
const int stencil = mCreationFormat.stencil;
int samples = mCreationFormat.samples;
GLint maxSamples = 0;
if (SupportsFramebufferMultisample() && !aDisableAA)
fGetIntegerv(LOCAL_GL_MAX_SAMPLES, &maxSamples);
samples = NS_MIN(samples, maxSamples);
const bool useDrawMSFBO = (samples > 0);
if (!useDrawMSFBO && !aUseReadFBO) {
// Early out, as no FBO resize work is necessary.
return true;
}
GLuint curBoundFramebufferDraw = 0;
GLuint curBoundFramebufferRead = 0;
GLuint curBoundRenderbuffer = 0;
GLuint curBoundTexture = 0;
GLint viewport[4];
const bool useDepthStencil =
!mIsGLES2 || IsExtensionSupported(OES_packed_depth_stencil);
// save a few things for later restoring
curBoundFramebufferDraw = GetUserBoundDrawFBO();
curBoundFramebufferRead = GetUserBoundReadFBO();
fGetIntegerv(LOCAL_GL_RENDERBUFFER_BINDING, (GLint*) &curBoundRenderbuffer);
fGetIntegerv(LOCAL_GL_TEXTURE_BINDING_2D, (GLint*) &curBoundTexture);
fGetIntegerv(LOCAL_GL_VIEWPORT, viewport);
// the context format of what we're defining
// This becomes mActualFormat on success
ContextFormat cf(mCreationFormat);
// Create everything we need for the resize, so if it fails, we haven't broken anything
// If successful, these new resized objects will replace their associated member vars in GLContext
GLuint newOffscreenDrawFBO = 0;
GLuint newOffscreenReadFBO = 0;
GLuint newOffscreenTexture = 0;
GLuint newOffscreenColorRB = 0;
GLuint newOffscreenDepthRB = 0;
GLuint newOffscreenStencilRB = 0;
// Create the buffers and texture
if (aUseReadFBO) {
fGenFramebuffers(1, &newOffscreenReadFBO);
fGenTextures(1, &newOffscreenTexture);
}
if (useDrawMSFBO) {
fGenFramebuffers(1, &newOffscreenDrawFBO);
fGenRenderbuffers(1, &newOffscreenColorRB);
} else {
newOffscreenDrawFBO = newOffscreenReadFBO;
}
if (depth && stencil && useDepthStencil) {
fGenRenderbuffers(1, &newOffscreenDepthRB);
} else {
if (depth) {
fGenRenderbuffers(1, &newOffscreenDepthRB);
}
if (stencil) {
fGenRenderbuffers(1, &newOffscreenStencilRB);
}
}
// Allocate texture
if (aUseReadFBO) {
fBindTexture(LOCAL_GL_TEXTURE_2D, newOffscreenTexture);
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER, LOCAL_GL_LINEAR);
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER, LOCAL_GL_LINEAR);
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE);
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE);
if (alpha) {
fTexImage2D(LOCAL_GL_TEXTURE_2D,
0,
LOCAL_GL_RGBA,
aSize.width, aSize.height,
0,
LOCAL_GL_RGBA,
LOCAL_GL_UNSIGNED_BYTE,
NULL);
cf.red = cf.green = cf.blue = cf.alpha = 8;
} else {
fTexImage2D(LOCAL_GL_TEXTURE_2D,
0,
LOCAL_GL_RGB,
aSize.width, aSize.height,
0,
LOCAL_GL_RGB,
#ifdef XP_WIN
LOCAL_GL_UNSIGNED_BYTE,
#else
mIsGLES2 ? LOCAL_GL_UNSIGNED_SHORT_5_6_5
: LOCAL_GL_UNSIGNED_BYTE,
#endif
NULL);
#ifdef XP_WIN
cf.red = cf.green = cf.blue = 8;
#else
cf.red = 5;
cf.green = 6;
cf.blue = 5;
#endif
cf.alpha = 0;
}
}
cf.samples = samples;
// Allocate color buffer
if (useDrawMSFBO) {
GLenum colorFormat;
if (!mIsGLES2 || IsExtensionSupported(OES_rgb8_rgba8))
colorFormat = alpha ? LOCAL_GL_RGBA8 : LOCAL_GL_RGB8;
else
colorFormat = alpha ? LOCAL_GL_RGBA4 : LOCAL_GL_RGB565;
fBindRenderbuffer(LOCAL_GL_RENDERBUFFER, newOffscreenColorRB);
fRenderbufferStorageMultisample(LOCAL_GL_RENDERBUFFER,
samples,
colorFormat,
aSize.width, aSize.height);
}
// Allocate depth and stencil buffers
if (depth && stencil && useDepthStencil) {
fBindRenderbuffer(LOCAL_GL_RENDERBUFFER, newOffscreenDepthRB);
if (useDrawMSFBO) {
fRenderbufferStorageMultisample(LOCAL_GL_RENDERBUFFER,
samples,
LOCAL_GL_DEPTH24_STENCIL8,
aSize.width, aSize.height);
} else {
fRenderbufferStorage(LOCAL_GL_RENDERBUFFER,
LOCAL_GL_DEPTH24_STENCIL8,
aSize.width, aSize.height);
}
cf.depth = 24;
cf.stencil = 8;
} else {
if (depth) {
GLenum depthType;
if (mIsGLES2) {
if (IsExtensionSupported(OES_depth32)) {
depthType = LOCAL_GL_DEPTH_COMPONENT32;
cf.depth = 32;
} else if (IsExtensionSupported(OES_depth24)) {
depthType = LOCAL_GL_DEPTH_COMPONENT24;
cf.depth = 24;
} else {
depthType = LOCAL_GL_DEPTH_COMPONENT16;
cf.depth = 16;
}
} else {
depthType = LOCAL_GL_DEPTH_COMPONENT24;
cf.depth = 24;
}
fBindRenderbuffer(LOCAL_GL_RENDERBUFFER, newOffscreenDepthRB);
if (useDrawMSFBO) {
fRenderbufferStorageMultisample(LOCAL_GL_RENDERBUFFER,
samples,
depthType,
aSize.width, aSize.height);
} else {
fRenderbufferStorage(LOCAL_GL_RENDERBUFFER,
depthType,
aSize.width, aSize.height);
}
}
if (stencil) {
fBindRenderbuffer(LOCAL_GL_RENDERBUFFER, newOffscreenStencilRB);
if (useDrawMSFBO) {
fRenderbufferStorageMultisample(LOCAL_GL_RENDERBUFFER,
samples,
LOCAL_GL_STENCIL_INDEX8,
aSize.width, aSize.height);
} else {
fRenderbufferStorage(LOCAL_GL_RENDERBUFFER,
LOCAL_GL_STENCIL_INDEX8,
aSize.width, aSize.height);
}
cf.stencil = 8;
}
}
// Now assemble the FBO
BindInternalFBO(newOffscreenDrawFBO); // If we're not using a separate draw FBO, this will be the read FBO
if (useDrawMSFBO) {
fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER,
LOCAL_GL_COLOR_ATTACHMENT0,
LOCAL_GL_RENDERBUFFER,
newOffscreenColorRB);
}
if (depth && stencil && useDepthStencil) {
fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER,
LOCAL_GL_DEPTH_ATTACHMENT,
LOCAL_GL_RENDERBUFFER,
newOffscreenDepthRB);
fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER,
LOCAL_GL_STENCIL_ATTACHMENT,
LOCAL_GL_RENDERBUFFER,
newOffscreenDepthRB);
} else {
if (depth) {
fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER,
LOCAL_GL_DEPTH_ATTACHMENT,
LOCAL_GL_RENDERBUFFER,
newOffscreenDepthRB);
}
if (stencil) {
fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER,
LOCAL_GL_STENCIL_ATTACHMENT,
LOCAL_GL_RENDERBUFFER,
newOffscreenStencilRB);
}
}
if (aUseReadFBO) {
BindInternalFBO(newOffscreenReadFBO);
fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER,
LOCAL_GL_COLOR_ATTACHMENT0,
LOCAL_GL_TEXTURE_2D,
newOffscreenTexture,
0);
}
// We should be all resized. Check for framebuffer completeness.
GLenum status;
bool framebuffersComplete = true;
BindInternalFBO(newOffscreenDrawFBO);
status = fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
if (status != LOCAL_GL_FRAMEBUFFER_COMPLETE) {
NS_WARNING("DrawFBO: Incomplete");
#ifdef DEBUG
printf_stderr("Framebuffer status: %X\n", status);
#endif
framebuffersComplete = false;
}
BindInternalFBO(newOffscreenReadFBO);
status = fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
if (status != LOCAL_GL_FRAMEBUFFER_COMPLETE) {
NS_WARNING("ReadFBO: Incomplete");
#ifdef DEBUG
printf_stderr("Framebuffer status: %X\n", status);
#endif
framebuffersComplete = false;
}
if (!framebuffersComplete) {
NS_WARNING("Error resizing offscreen framebuffer -- framebuffer(s) not complete");
// Clean up the mess
fDeleteFramebuffers(1, &newOffscreenDrawFBO);
fDeleteFramebuffers(1, &newOffscreenReadFBO);
fDeleteTextures(1, &newOffscreenTexture);
fDeleteRenderbuffers(1, &newOffscreenColorRB);
fDeleteRenderbuffers(1, &newOffscreenDepthRB);
fDeleteRenderbuffers(1, &newOffscreenStencilRB);
BindUserDrawFBO(curBoundFramebufferDraw);
BindUserReadFBO(curBoundFramebufferRead);
fBindTexture(LOCAL_GL_TEXTURE_2D, curBoundTexture);
fBindRenderbuffer(LOCAL_GL_RENDERBUFFER, curBoundRenderbuffer);
fViewport(viewport[0], viewport[1], viewport[2], viewport[3]);
return false;
}
// Success, so delete the old and busted
fDeleteFramebuffers(1, &mOffscreenDrawFBO);
fDeleteFramebuffers(1, &mOffscreenReadFBO);
fDeleteTextures(1, &mOffscreenTexture);
fDeleteRenderbuffers(1, &mOffscreenColorRB);
fDeleteRenderbuffers(1, &mOffscreenDepthRB);
fDeleteRenderbuffers(1, &mOffscreenStencilRB);
// Update currently bound references if we're changing what they were point to
// This way we don't rebind to old buffers when we're done here
if (curBoundFramebufferDraw == mOffscreenDrawFBO)
curBoundFramebufferDraw = newOffscreenDrawFBO;
if (curBoundFramebufferRead == mOffscreenReadFBO)
curBoundFramebufferRead = newOffscreenReadFBO;
if (curBoundTexture == mOffscreenTexture)
curBoundTexture = newOffscreenTexture;
if (curBoundRenderbuffer == mOffscreenColorRB)
curBoundRenderbuffer = newOffscreenColorRB;
else if (curBoundRenderbuffer == mOffscreenDepthRB)
curBoundRenderbuffer = newOffscreenDepthRB;
else if (curBoundRenderbuffer == mOffscreenStencilRB)
curBoundRenderbuffer = newOffscreenStencilRB;
// Replace with the new hotness
mOffscreenDrawFBO = newOffscreenDrawFBO;
mOffscreenReadFBO = newOffscreenReadFBO;
mOffscreenTexture = newOffscreenTexture;
mOffscreenColorRB = newOffscreenColorRB;
mOffscreenDepthRB = newOffscreenDepthRB;
mOffscreenStencilRB = newOffscreenStencilRB;
mOffscreenSize = aSize;
mOffscreenActualSize = aSize;
mActualFormat = cf;
#ifdef DEBUG
if (DebugMode()) {
printf_stderr("Resized %dx%d offscreen FBO: r: %d g: %d b: %d a: %d depth: %d stencil: %d samples: %d\n",
mOffscreenActualSize.width, mOffscreenActualSize.height,
mActualFormat.red, mActualFormat.green, mActualFormat.blue, mActualFormat.alpha,
mActualFormat.depth, mActualFormat.stencil, mActualFormat.samples);
}
#endif
// We're good, and the framebuffer is already attached.
// Now restore the GL state back to what it was before the resize took place.
// If the user was using fb 0, this will bind the offscreen framebuffer we
// just created.
BindUserDrawFBO(curBoundFramebufferDraw);
BindUserReadFBO(curBoundFramebufferRead);
fBindTexture(LOCAL_GL_TEXTURE_2D, curBoundTexture);
fBindRenderbuffer(LOCAL_GL_RENDERBUFFER, curBoundRenderbuffer);
fViewport(viewport[0], viewport[1], viewport[2], viewport[3]);
// Make sure we know that the buffers are new and thus dirty:
ForceDirtyFBOs();
return true;
}
void
GLContext::DeleteOffscreenFBO()
{
fDeleteFramebuffers(1, &mOffscreenDrawFBO);
fDeleteFramebuffers(1, &mOffscreenReadFBO);
fDeleteTextures(1, &mOffscreenTexture);
fDeleteRenderbuffers(1, &mOffscreenColorRB);
fDeleteRenderbuffers(1, &mOffscreenDepthRB);
fDeleteRenderbuffers(1, &mOffscreenStencilRB);
mOffscreenDrawFBO = 0;
mOffscreenReadFBO = 0;
mOffscreenTexture = 0;
mOffscreenColorRB = 0;
mOffscreenDepthRB = 0;
mOffscreenStencilRB = 0;
}
void
GLContext::ClearSafely()
{
// bug 659349 --- we must be very careful here: clearing a GL framebuffer is nontrivial, relies on a lot of state,
// and in the case of the backbuffer of a WebGL context, state is exposed to scripts.
//
// The code here is taken from WebGLContext::ForceClearFramebufferWithDefaultValues, but I didn't find a good way of
// sharing code with it. WebGL's code is somewhat performance-critical as it is typically called on every frame, so
// WebGL keeps track of GL state to avoid having to query it everytime, and also tries to only do work for actually
// present buffers (e.g. stencil buffer). Doing that here seems like premature optimization,
// as ClearSafely() is called only when e.g. a canvas is resized, not on every animation frame.
realGLboolean scissorTestEnabled;
realGLboolean ditherEnabled;
realGLboolean colorWriteMask[4];
realGLboolean depthWriteMask;
GLint stencilWriteMaskFront, stencilWriteMaskBack;
GLfloat colorClearValue[4];
GLfloat depthClearValue;
GLint stencilClearValue;
// save current GL state
fGetBooleanv(LOCAL_GL_SCISSOR_TEST, &scissorTestEnabled);
fGetBooleanv(LOCAL_GL_DITHER, &ditherEnabled);
fGetBooleanv(LOCAL_GL_COLOR_WRITEMASK, colorWriteMask);
fGetBooleanv(LOCAL_GL_DEPTH_WRITEMASK, &depthWriteMask);
fGetIntegerv(LOCAL_GL_STENCIL_WRITEMASK, &stencilWriteMaskFront);
fGetIntegerv(LOCAL_GL_STENCIL_BACK_WRITEMASK, &stencilWriteMaskBack);
fGetFloatv(LOCAL_GL_COLOR_CLEAR_VALUE, colorClearValue);
fGetFloatv(LOCAL_GL_DEPTH_CLEAR_VALUE, &depthClearValue);
fGetIntegerv(LOCAL_GL_STENCIL_CLEAR_VALUE, &stencilClearValue);
// prepare GL state for clearing
fDisable(LOCAL_GL_SCISSOR_TEST);
fDisable(LOCAL_GL_DITHER);
PushViewportRect(nsIntRect(0, 0, mOffscreenSize.width, mOffscreenSize.height));
fColorMask(1, 1, 1, 1);
fClearColor(0.f, 0.f, 0.f, 0.f);
fDepthMask(1);
fClearDepth(1.0f);
fStencilMask(0xffffffff);
fClearStencil(0);
// do clear
fClear(LOCAL_GL_COLOR_BUFFER_BIT |
LOCAL_GL_DEPTH_BUFFER_BIT |
LOCAL_GL_STENCIL_BUFFER_BIT);
// restore GL state after clearing
fColorMask(colorWriteMask[0],
colorWriteMask[1],
colorWriteMask[2],
colorWriteMask[3]);
fClearColor(colorClearValue[0],
colorClearValue[1],
colorClearValue[2],
colorClearValue[3]);
fDepthMask(depthWriteMask);
fClearDepth(depthClearValue);
fStencilMaskSeparate(LOCAL_GL_FRONT, stencilWriteMaskFront);
fStencilMaskSeparate(LOCAL_GL_BACK, stencilWriteMaskBack);
fClearStencil(stencilClearValue);
PopViewportRect();
if (ditherEnabled)
fEnable(LOCAL_GL_DITHER);
else
fDisable(LOCAL_GL_DITHER);
if (scissorTestEnabled)
fEnable(LOCAL_GL_SCISSOR_TEST);
else
fDisable(LOCAL_GL_SCISSOR_TEST);
}
void
GLContext::UpdateActualFormat()
{
ContextFormat nf;
fGetIntegerv(LOCAL_GL_RED_BITS, (GLint*) &nf.red);
fGetIntegerv(LOCAL_GL_GREEN_BITS, (GLint*) &nf.green);
fGetIntegerv(LOCAL_GL_BLUE_BITS, (GLint*) &nf.blue);
fGetIntegerv(LOCAL_GL_ALPHA_BITS, (GLint*) &nf.alpha);
fGetIntegerv(LOCAL_GL_DEPTH_BITS, (GLint*) &nf.depth);
fGetIntegerv(LOCAL_GL_STENCIL_BITS, (GLint*) &nf.stencil);
mActualFormat = nf;
}
void
GLContext::MarkDestroyed()
{
if (IsDestroyed())
return;
MakeCurrent();
DeleteOffscreenFBO();
fDeleteProgram(mBlitProgram);
mBlitProgram = 0;
fDeleteFramebuffers(1, &mBlitFramebuffer);
mBlitFramebuffer = 0;
mSymbols.Zero();
}
static void SwapRAndBComponents(gfxImageSurface* aSurf)
{
gfxIntSize size = aSurf->GetSize();
for (int j = 0; j < size.height; ++j) {
PRUint32 *row = (PRUint32*) (aSurf->Data() + aSurf->Stride() * j);
for (int i = 0; i < size.width; ++i) {
*row = (*row & 0xff00ff00) | ((*row & 0xff) << 16) | ((*row & 0xff0000) >> 16);
row++;
}
}
}
static already_AddRefed<gfxImageSurface> YInvertImageSurface(gfxImageSurface* aSurf)
{
gfxIntSize size = aSurf->GetSize();
nsRefPtr<gfxImageSurface> temp = new gfxImageSurface(size, aSurf->Format());
nsRefPtr<gfxContext> ctx = new gfxContext(temp);
ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
ctx->Scale(1.0, -1.0);
ctx->Translate(-gfxPoint(0.0, size.height));
ctx->SetSource(aSurf);
ctx->Paint();
return temp.forget();
}
already_AddRefed<gfxImageSurface>
GLContext::GetTexImage(GLuint aTexture, bool aYInvert, ShaderProgramType aShader)
{
MakeCurrent();
fFinish();
fActiveTexture(LOCAL_GL_TEXTURE0);
fBindTexture(LOCAL_GL_TEXTURE_2D, aTexture);
gfxIntSize size;
fGetTexLevelParameteriv(LOCAL_GL_TEXTURE_2D, 0, LOCAL_GL_TEXTURE_WIDTH, &size.width);
fGetTexLevelParameteriv(LOCAL_GL_TEXTURE_2D, 0, LOCAL_GL_TEXTURE_HEIGHT, &size.height);
nsRefPtr<gfxImageSurface> surf = new gfxImageSurface(size, gfxASurface::ImageFormatARGB32);
if (!surf || surf->CairoStatus()) {
return NULL;
}
PRUint32 currentPackAlignment = 0;
fGetIntegerv(LOCAL_GL_PACK_ALIGNMENT, (GLint*)&currentPackAlignment);
if (currentPackAlignment != 4) {
fPixelStorei(LOCAL_GL_PACK_ALIGNMENT, 4);
}
fGetTexImage(LOCAL_GL_TEXTURE_2D, 0, LOCAL_GL_RGBA, LOCAL_GL_UNSIGNED_BYTE, surf->Data());
if (currentPackAlignment != 4) {
fPixelStorei(LOCAL_GL_PACK_ALIGNMENT, currentPackAlignment);
}
if (aShader == RGBALayerProgramType || aShader == RGBXLayerProgramType) {
SwapRAndBComponents(surf);
}
if (aYInvert) {
surf = YInvertImageSurface(surf);
}
return surf.forget();
}
already_AddRefed<gfxImageSurface>
GLContext::ReadTextureImage(GLuint aTexture,
const gfxIntSize& aSize,
GLenum aTextureFormat,
bool aYInvert)
{
MakeCurrent();
nsRefPtr<gfxImageSurface> isurf;
GLint oldrb, oldfb, oldprog, oldPackAlignment;
GLint success;
GLuint rb = 0, fb = 0;
GLuint vs = 0, fs = 0, prog = 0;
const char *vShader =
"attribute vec4 aVertex;\n"
"attribute vec2 aTexCoord;\n"
"varying vec2 vTexCoord;\n"
"void main() { gl_Position = aVertex; vTexCoord = aTexCoord; }";
const char *fShader =
"#ifdef GL_ES\n"
"precision mediump float;\n"
"#endif\n"
"varying vec2 vTexCoord;\n"
"uniform sampler2D uTexture;\n"
"void main() { gl_FragColor = texture2D(uTexture, vTexCoord); }";
float verts[4*4] = {
-1.0f, -1.0f, 0.0f, 1.0f,
1.0f, -1.0f, 0.0f, 1.0f,
-1.0f, 1.0f, 0.0f, 1.0f,
1.0f, 1.0f, 0.0f, 1.0f
};
float texcoords[2*4] = {
0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f
};
fGetIntegerv(LOCAL_GL_RENDERBUFFER_BINDING, &oldrb);
fGetIntegerv(LOCAL_GL_FRAMEBUFFER_BINDING, &oldfb);
fGetIntegerv(LOCAL_GL_CURRENT_PROGRAM, &oldprog);
fGetIntegerv(LOCAL_GL_PACK_ALIGNMENT, &oldPackAlignment);
PushViewportRect(nsIntRect(0, 0, aSize.width, aSize.height));
fGenRenderbuffers(1, &rb);
fBindRenderbuffer(LOCAL_GL_RENDERBUFFER, rb);
fRenderbufferStorage(LOCAL_GL_RENDERBUFFER, LOCAL_GL_RGBA,
aSize.width, aSize.height);
fGenFramebuffers(1, &fb);
fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, fb);
fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
LOCAL_GL_RENDERBUFFER, rb);
if (fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER) !=
LOCAL_GL_FRAMEBUFFER_COMPLETE)
{
goto cleanup;
}
vs = fCreateShader(LOCAL_GL_VERTEX_SHADER);
fs = fCreateShader(LOCAL_GL_FRAGMENT_SHADER);
fShaderSource(vs, 1, (const GLchar**) &vShader, NULL);
fShaderSource(fs, 1, (const GLchar**) &fShader, NULL);
fCompileShader(vs);
fCompileShader(fs);
prog = fCreateProgram();
fAttachShader(prog, vs);
fAttachShader(prog, fs);
fBindAttribLocation(prog, 0, "aVertex");
fBindAttribLocation(prog, 1, "aTexCoord");
fLinkProgram(prog);
fGetProgramiv(prog, LOCAL_GL_LINK_STATUS, &success);
if (!success) {
goto cleanup;
}
fUseProgram(prog);
fEnableVertexAttribArray(0);
fEnableVertexAttribArray(1);
fVertexAttribPointer(0, 4, LOCAL_GL_FLOAT, LOCAL_GL_FALSE, 0, verts);
fVertexAttribPointer(1, 2, LOCAL_GL_FLOAT, LOCAL_GL_FALSE, 0, texcoords);
fActiveTexture(LOCAL_GL_TEXTURE0);
fBindTexture(LOCAL_GL_TEXTURE_2D, aTexture);
fUniform1i(fGetUniformLocation(prog, "uTexture"), 0);
fDrawArrays(LOCAL_GL_TRIANGLE_STRIP, 0, 4);
fDisableVertexAttribArray(1);
fDisableVertexAttribArray(0);
isurf = new gfxImageSurface(aSize, gfxASurface::ImageFormatARGB32);
if (!isurf || isurf->CairoStatus()) {
isurf = nsnull;
goto cleanup;
}
if (oldPackAlignment != 4)
fPixelStorei(LOCAL_GL_PACK_ALIGNMENT, 4);
fReadPixels(0, 0, aSize.width, aSize.height,
LOCAL_GL_RGBA, LOCAL_GL_UNSIGNED_BYTE,
isurf->Data());
SwapRAndBComponents(isurf);
if (oldPackAlignment != 4)
fPixelStorei(LOCAL_GL_PACK_ALIGNMENT, oldPackAlignment);
if (aYInvert) {
isurf = YInvertImageSurface(isurf);
}
cleanup:
// note that deleting 0 has no effect in any of these calls
fDeleteRenderbuffers(1, &rb);
fDeleteFramebuffers(1, &fb);
fDeleteShader(vs);
fDeleteShader(fs);
fDeleteProgram(prog);
fBindRenderbuffer(LOCAL_GL_RENDERBUFFER, oldrb);
fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, oldfb);
fUseProgram(oldprog);
PopViewportRect();
return isurf.forget();
}
static void
GetOptimalReadFormats(GLContext* gl, GLenum& format, GLenum& type) {
if (gl->IsGLES2()) {
bool has_BGRA_UByte = false;
if (gl->IsExtensionSupported(gl::GLContext::EXT_bgra)) {
has_BGRA_UByte = true;
} else if (gl->IsExtensionSupported(gl::GLContext::EXT_read_format_bgra) ||
gl->IsExtensionSupported(gl::GLContext::IMG_read_format)) {
// Note that these extensions are not required to query this value.
// However, we should never get back BGRA unless one of these is supported.
GLint auxFormat = 0;
GLint auxType = 0;
gl->fGetIntegerv(LOCAL_GL_IMPLEMENTATION_COLOR_READ_FORMAT, &auxFormat);
gl->fGetIntegerv(LOCAL_GL_IMPLEMENTATION_COLOR_READ_TYPE, &auxType);
if (auxFormat == LOCAL_GL_BGRA && auxType == LOCAL_GL_UNSIGNED_BYTE)
has_BGRA_UByte = true;
}
format = has_BGRA_UByte ? LOCAL_GL_BGRA : LOCAL_GL_RGBA;
type = LOCAL_GL_UNSIGNED_BYTE;
} else {
// defaults for desktop
format = LOCAL_GL_BGRA;
type = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
}
}
void
GLContext::ReadPixelsIntoImageSurface(GLint aX, GLint aY,
GLsizei aWidth, GLsizei aHeight,
gfxImageSurface *aDest)
{
MakeCurrent();
if (aDest->Format() != gfxASurface::ImageFormatARGB32 &&
aDest->Format() != gfxASurface::ImageFormatRGB24)
{
NS_WARNING("ReadPixelsIntoImageSurface called with invalid image format");
return;
}
if (aDest->Width() != aWidth ||
aDest->Height() != aHeight ||
aDest->Stride() != aWidth * 4)
{
NS_WARNING("ReadPixelsIntoImageSurface called with wrong size or stride surface");
return;
}
GLint currentPackAlignment = 0;
fGetIntegerv(LOCAL_GL_PACK_ALIGNMENT, &currentPackAlignment);
if (currentPackAlignment != 4)
fPixelStorei(LOCAL_GL_PACK_ALIGNMENT, 4);
GLenum format;
GLenum datatype;
GetOptimalReadFormats(this, format, datatype);
fReadPixels(0, 0, aWidth, aHeight,
format, datatype,
aDest->Data());
// Output should be in BGRA, so swap if RGBA
if (format == LOCAL_GL_RGBA) {
// swap B and R bytes
for (int j = 0; j < aHeight; ++j) {
PRUint32 *row = (PRUint32*) (aDest->Data() + aDest->Stride() * j);
for (int i = 0; i < aWidth; ++i) {
*row = (*row & 0xff00ff00) | ((*row & 0xff) << 16) | ((*row & 0xff0000) >> 16);
row++;
}
}
}
if (currentPackAlignment != 4)
fPixelStorei(LOCAL_GL_PACK_ALIGNMENT, currentPackAlignment);
}
void
GLContext::BlitTextureImage(TextureImage *aSrc, const nsIntRect& aSrcRect,
TextureImage *aDst, const nsIntRect& aDstRect)
{
NS_ASSERTION(!aSrc->InUpdate(), "Source texture is in update!");
NS_ASSERTION(!aDst->InUpdate(), "Destination texture is in update!");
if (aSrcRect.IsEmpty() || aDstRect.IsEmpty())
return;
// only save/restore this stuff on Qualcomm Adreno, to work
// around an apparent bug
int savedFb = 0;
if (mVendor == VendorQualcomm) {
fGetIntegerv(LOCAL_GL_FRAMEBUFFER_BINDING, &savedFb);
}
fDisable(LOCAL_GL_SCISSOR_TEST);
fDisable(LOCAL_GL_BLEND);
// 2.0 means scale up by two
float blitScaleX = float(aDstRect.width) / float(aSrcRect.width);
float blitScaleY = float(aDstRect.height) / float(aSrcRect.height);
// We start iterating over all destination tiles
aDst->BeginTileIteration();
do {
// calculate portion of the tile that is going to be painted to
nsIntRect dstSubRect;
nsIntRect dstTextureRect = aDst->GetTileRect();
dstSubRect.IntersectRect(aDstRect, dstTextureRect);
// this tile is not part of the destination rectangle aDstRect
if (dstSubRect.IsEmpty())
continue;
// (*) transform the rect of this tile into the rectangle defined by aSrcRect...
nsIntRect dstInSrcRect(dstSubRect);
dstInSrcRect.MoveBy(-aDstRect.TopLeft());
// ...which might be of different size, hence scale accordingly
dstInSrcRect.ScaleRoundOut(1.0f / blitScaleX, 1.0f / blitScaleY);
dstInSrcRect.MoveBy(aSrcRect.TopLeft());
SetBlitFramebufferForDestTexture(aDst->GetTextureID());
UseBlitProgram();
aSrc->BeginTileIteration();
// now iterate over all tiles in the source Image...
do {
// calculate portion of the source tile that is in the source rect
nsIntRect srcSubRect;
nsIntRect srcTextureRect = aSrc->GetTileRect();
srcSubRect.IntersectRect(aSrcRect, srcTextureRect);
// this tile is not part of the source rect
if (srcSubRect.IsEmpty()) {
continue;
}
// calculate intersection of source rect with destination rect
srcSubRect.IntersectRect(srcSubRect, dstInSrcRect);
// this tile does not overlap the current destination tile
if (srcSubRect.IsEmpty()) {
continue;
}
// We now have the intersection of
// the current source tile
// and the desired source rectangle
// and the destination tile
// and the desired destination rectange
// in destination space.
// We need to transform this back into destination space, inverting the transform from (*)
nsIntRect srcSubInDstRect(srcSubRect);
srcSubInDstRect.MoveBy(-aSrcRect.TopLeft());
srcSubInDstRect.ScaleRoundOut(blitScaleX, blitScaleY);
srcSubInDstRect.MoveBy(aDstRect.TopLeft());
// we transform these rectangles to be relative to the current src and dst tiles, respectively
nsIntSize srcSize = srcTextureRect.Size();
nsIntSize dstSize = dstTextureRect.Size();
srcSubRect.MoveBy(-srcTextureRect.x, -srcTextureRect.y);
srcSubInDstRect.MoveBy(-dstTextureRect.x, -dstTextureRect.y);
float dx0 = 2.0 * float(srcSubInDstRect.x) / float(dstSize.width) - 1.0;
float dy0 = 2.0 * float(srcSubInDstRect.y) / float(dstSize.height) - 1.0;
float dx1 = 2.0 * float(srcSubInDstRect.x + srcSubInDstRect.width) / float(dstSize.width) - 1.0;
float dy1 = 2.0 * float(srcSubInDstRect.y + srcSubInDstRect.height) / float(dstSize.height) - 1.0;
PushViewportRect(nsIntRect(0, 0, dstSize.width, dstSize.height));
RectTriangles rects;
nsIntSize realTexSize = srcSize;
if (!CanUploadNonPowerOfTwo()) {
realTexSize = nsIntSize(NextPowerOfTwo(srcSize.width),
NextPowerOfTwo(srcSize.height));
}
if (aSrc->GetWrapMode() == LOCAL_GL_REPEAT) {
rects.addRect(/* dest rectangle */
dx0, dy0, dx1, dy1,
/* tex coords */
srcSubRect.x / float(realTexSize.width),
srcSubRect.y / float(realTexSize.height),
srcSubRect.XMost() / float(realTexSize.width),
srcSubRect.YMost() / float(realTexSize.height));
} else {
DecomposeIntoNoRepeatTriangles(srcSubRect, realTexSize, rects);
// now put the coords into the d[xy]0 .. d[xy]1 coordinate space
// from the 0..1 that it comes out of decompose
RectTriangles::vert_coord* v = (RectTriangles::vert_coord*)rects.vertexPointer();
for (unsigned int i = 0; i < rects.elements(); ++i) {
v[i].x = (v[i].x * (dx1 - dx0)) + dx0;
v[i].y = (v[i].y * (dy1 - dy0)) + dy0;
}
}
TextureImage::ScopedBindTexture texBind(aSrc, LOCAL_GL_TEXTURE0);
fBindBuffer(LOCAL_GL_ARRAY_BUFFER, 0);
fVertexAttribPointer(0, 2, LOCAL_GL_FLOAT, LOCAL_GL_FALSE, 0, rects.vertexPointer());
fVertexAttribPointer(1, 2, LOCAL_GL_FLOAT, LOCAL_GL_FALSE, 0, rects.texCoordPointer());
fEnableVertexAttribArray(0);
fEnableVertexAttribArray(1);
fDrawArrays(LOCAL_GL_TRIANGLES, 0, rects.elements());
fDisableVertexAttribArray(0);
fDisableVertexAttribArray(1);
PopViewportRect();
} while (aSrc->NextTile());
} while (aDst->NextTile());
fVertexAttribPointer(0, 2, LOCAL_GL_FLOAT, LOCAL_GL_FALSE, 0, NULL);
fVertexAttribPointer(1, 2, LOCAL_GL_FLOAT, LOCAL_GL_FALSE, 0, NULL);
// unbind the previous texture from the framebuffer
SetBlitFramebufferForDestTexture(0);
// then put back the previous framebuffer, and don't
// enable stencil if it wasn't enabled on entry to work
// around Adreno 200 bug that causes us to crash if
// we enable scissor test while the current FBO is invalid
// (which it will be, once we assign texture 0 to the color
// attachment)
if (mVendor == VendorQualcomm) {
fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, savedFb);
}
fEnable(LOCAL_GL_SCISSOR_TEST);
fEnable(LOCAL_GL_BLEND);
}
static unsigned int
DataOffset(gfxImageSurface *aSurf, const nsIntPoint &aPoint)
{
unsigned int data = aPoint.y * aSurf->Stride();
data += aPoint.x * gfxASurface::BytePerPixelFromFormat(aSurf->Format());
return data;
}
ShaderProgramType
GLContext::UploadSurfaceToTexture(gfxASurface *aSurface,
const nsIntRegion& aDstRegion,
GLuint& aTexture,
bool aOverwrite,
const nsIntPoint& aSrcPoint,
bool aPixelBuffer)
{
bool textureInited = aOverwrite ? false : true;
MakeCurrent();
fActiveTexture(LOCAL_GL_TEXTURE0);
if (!aTexture) {
fGenTextures(1, &aTexture);
fBindTexture(LOCAL_GL_TEXTURE_2D, aTexture);
fTexParameteri(LOCAL_GL_TEXTURE_2D,
LOCAL_GL_TEXTURE_MIN_FILTER,
LOCAL_GL_LINEAR);
fTexParameteri(LOCAL_GL_TEXTURE_2D,
LOCAL_GL_TEXTURE_MAG_FILTER,
LOCAL_GL_LINEAR);
fTexParameteri(LOCAL_GL_TEXTURE_2D,
LOCAL_GL_TEXTURE_WRAP_S,
LOCAL_GL_CLAMP_TO_EDGE);
fTexParameteri(LOCAL_GL_TEXTURE_2D,
LOCAL_GL_TEXTURE_WRAP_T,
LOCAL_GL_CLAMP_TO_EDGE);
textureInited = false;
} else {
fBindTexture(LOCAL_GL_TEXTURE_2D, aTexture);
}
nsIntRegion paintRegion;
if (!textureInited) {
paintRegion = nsIntRegion(aDstRegion.GetBounds());
} else {
paintRegion = aDstRegion;
}
nsRefPtr<gfxImageSurface> imageSurface = aSurface->GetAsImageSurface();
unsigned char* data = NULL;
if (!imageSurface ||
(imageSurface->Format() != gfxASurface::ImageFormatARGB32 &&
imageSurface->Format() != gfxASurface::ImageFormatRGB24 &&
imageSurface->Format() != gfxASurface::ImageFormatRGB16_565 &&
imageSurface->Format() != gfxASurface::ImageFormatA8)) {
// We can't get suitable pixel data for the surface, make a copy
nsIntRect bounds = aDstRegion.GetBounds();
imageSurface =
new gfxImageSurface(gfxIntSize(bounds.width, bounds.height),
gfxASurface::ImageFormatARGB32);
nsRefPtr<gfxContext> context = new gfxContext(imageSurface);
context->Translate(-gfxPoint(aSrcPoint.x, aSrcPoint.y));
context->SetSource(aSurface);
context->Paint();
data = imageSurface->Data();
NS_ASSERTION(!aPixelBuffer,
"Must be using an image compatible surface with pixel buffers!");
} else {
// If a pixel buffer is bound the data pointer parameter is relative
// to the start of the data block.
if (!aPixelBuffer) {
data = imageSurface->Data();
}
data += DataOffset(imageSurface, aSrcPoint);
}
GLenum format;
GLenum internalformat;
GLenum type;
PRInt32 pixelSize = gfxASurface::BytePerPixelFromFormat(imageSurface->Format());
ShaderProgramType shader;
switch (imageSurface->Format()) {
case gfxASurface::ImageFormatARGB32:
format = LOCAL_GL_RGBA;
type = LOCAL_GL_UNSIGNED_BYTE;
shader = BGRALayerProgramType;
break;
case gfxASurface::ImageFormatRGB24:
// Treat RGB24 surfaces as RGBA32 except for the shader
// program used.
format = LOCAL_GL_RGBA;
type = LOCAL_GL_UNSIGNED_BYTE;
shader = BGRXLayerProgramType;
break;
case gfxASurface::ImageFormatRGB16_565:
format = LOCAL_GL_RGB;
type = LOCAL_GL_UNSIGNED_SHORT_5_6_5;
shader = RGBALayerProgramType;
break;
case gfxASurface::ImageFormatA8:
format = LOCAL_GL_LUMINANCE;
type = LOCAL_GL_UNSIGNED_BYTE;
// We don't have a specific luminance shader
shader = ShaderProgramType(0);
break;
default:
NS_ASSERTION(false, "Unhandled image surface format!");
format = 0;
type = 0;
shader = ShaderProgramType(0);
}
PRInt32 stride = imageSurface->Stride();
#ifndef USE_GLES2
internalformat = LOCAL_GL_RGBA;
#else
internalformat = format;
#endif
nsIntRegionRectIterator iter(paintRegion);
const nsIntRect *iterRect;
// Top left point of the region's bounding rectangle.
nsIntPoint topLeft = paintRegion.GetBounds().TopLeft();
while ((iterRect = iter.Next())) {
// The inital data pointer is at the top left point of the region's
// bounding rectangle. We need to find the offset of this rect
// within the region and adjust the data pointer accordingly.
unsigned char *rectData =
data + DataOffset(imageSurface, iterRect->TopLeft() - topLeft);
NS_ASSERTION(textureInited || (iterRect->x == 0 && iterRect->y == 0),
"Must be uploading to the origin when we don't have an existing texture");
if (textureInited && CanUploadSubTextures()) {
TexSubImage2D(LOCAL_GL_TEXTURE_2D,
0,
iterRect->x,
iterRect->y,
iterRect->width,
iterRect->height,
stride,
pixelSize,
format,
type,
rectData);
} else {
TexImage2D(LOCAL_GL_TEXTURE_2D,
0,
internalformat,
iterRect->width,
iterRect->height,
stride,
pixelSize,
0,
format,
type,
rectData);
}
}
return shader;
}
static GLint GetAddressAlignment(ptrdiff_t aAddress)
{
if (!(aAddress & 0x7)) {
return 8;
} else if (!(aAddress & 0x3)) {
return 4;
} else if (!(aAddress & 0x1)) {
return 2;
} else {
return 1;
}
}
void
GLContext::TexImage2D(GLenum target, GLint level, GLint internalformat,
GLsizei width, GLsizei height, GLsizei stride,
GLint pixelsize, GLint border, GLenum format,
GLenum type, const GLvoid *pixels)
{
#ifdef USE_GLES2
NS_ASSERTION(format == internalformat,
"format and internalformat not the same for glTexImage2D on GLES2");
if (!CanUploadNonPowerOfTwo()
&& (stride != width * pixelsize
|| !IsPowerOfTwo(width)
|| !IsPowerOfTwo(height))) {
// Pad out texture width and height to the next power of two
// as we don't support/want non power of two texture uploads
GLsizei paddedWidth = NextPowerOfTwo(width);
GLsizei paddedHeight = NextPowerOfTwo(height);
GLvoid* paddedPixels = new unsigned char[paddedWidth * paddedHeight * pixelsize];
// Pad out texture data to be in a POT sized buffer for uploading to
// a POT sized texture
CopyAndPadTextureData(pixels, paddedPixels, width, height,
paddedWidth, paddedHeight, stride, pixelsize);
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
NS_MIN(GetAddressAlignment((ptrdiff_t)paddedPixels),
GetAddressAlignment((ptrdiff_t)paddedWidth * pixelsize)));
fTexImage2D(target,
border,
internalformat,
paddedWidth,
paddedHeight,
border,
format,
type,
paddedPixels);
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
delete[] static_cast<unsigned char*>(paddedPixels);
return;
}
if (stride == width * pixelsize) {
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
NS_MIN(GetAddressAlignment((ptrdiff_t)pixels),
GetAddressAlignment((ptrdiff_t)stride)));
fTexImage2D(target,
border,
internalformat,
width,
height,
border,
format,
type,
pixels);
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
} else {
// Use GLES-specific workarounds for GL_UNPACK_ROW_LENGTH; these are
// implemented in TexSubImage2D.
fTexImage2D(target,
border,
internalformat,
width,
height,
border,
format,
type,
NULL);
TexSubImage2D(target,
level,
0,
0,
width,
height,
stride,
pixelsize,
format,
type,
pixels);
}
#else
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
NS_MIN(GetAddressAlignment((ptrdiff_t)pixels),
GetAddressAlignment((ptrdiff_t)stride)));
int rowLength = stride/pixelsize;
fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, rowLength);
fTexImage2D(target,
level,
internalformat,
width,
height,
border,
format,
type,
pixels);
fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, 0);
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
#endif
}
void
GLContext::TexSubImage2D(GLenum target, GLint level,
GLint xoffset, GLint yoffset,
GLsizei width, GLsizei height, GLsizei stride,
GLint pixelsize, GLenum format,
GLenum type, const GLvoid* pixels)
{
#ifdef USE_GLES2
if (stride == width * pixelsize) {
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
NS_MIN(GetAddressAlignment((ptrdiff_t)pixels),
GetAddressAlignment((ptrdiff_t)stride)));
fTexSubImage2D(target,
level,
xoffset,
yoffset,
width,
height,
format,
type,
pixels);
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
} else if (IsExtensionSupported(EXT_unpack_subimage)) {
TexSubImage2DWithUnpackSubimageGLES(target, level, xoffset, yoffset,
width, height, stride,
pixelsize, format, type, pixels);
} else {
TexSubImage2DWithoutUnpackSubimage(target, level, xoffset, yoffset,
width, height, stride,
pixelsize, format, type, pixels);
}
#else
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
NS_MIN(GetAddressAlignment((ptrdiff_t)pixels),
GetAddressAlignment((ptrdiff_t)stride)));
int rowLength = stride/pixelsize;
fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, rowLength);
fTexSubImage2D(target,
level,
xoffset,
yoffset,
width,
height,
format,
type,
pixels);
fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, 0);
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
#endif
}
void
GLContext::TexSubImage2DWithUnpackSubimageGLES(GLenum target, GLint level,
GLint xoffset, GLint yoffset,
GLsizei width, GLsizei height,
GLsizei stride, GLint pixelsize,
GLenum format, GLenum type,
const GLvoid* pixels)
{
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
NS_MIN(GetAddressAlignment((ptrdiff_t)pixels),
GetAddressAlignment((ptrdiff_t)stride)));
// When using GL_UNPACK_ROW_LENGTH, we need to work around a Tegra
// driver crash where the driver apparently tries to read
// (stride - width * pixelsize) bytes past the end of the last input
// row. We only upload the first height-1 rows using GL_UNPACK_ROW_LENGTH,
// and then we upload the final row separately. See bug 697990.
int rowLength = stride/pixelsize;
fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, rowLength);
fTexSubImage2D(target,
level,
xoffset,
yoffset,
width,
height-1,
format,
type,
pixels);
fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, 0);
fTexSubImage2D(target,
level,
xoffset,
yoffset+height-1,
width,
1,
format,
type,
(const unsigned char *)pixels+(height-1)*stride);
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
}
void
GLContext::TexSubImage2DWithoutUnpackSubimage(GLenum target, GLint level,
GLint xoffset, GLint yoffset,
GLsizei width, GLsizei height,
GLsizei stride, GLint pixelsize,
GLenum format, GLenum type,
const GLvoid* pixels)
{
// Not using the whole row of texture data and GL_UNPACK_ROW_LENGTH
// isn't supported. We make a copy of the texture data we're using,
// such that we're using the whole row of data in the copy. This turns
// out to be more efficient than uploading row-by-row; see bug 698197.
unsigned char *newPixels = new unsigned char[width*height*pixelsize];
unsigned char *rowDest = newPixels;
const unsigned char *rowSource = (const unsigned char *)pixels;
for (int h = 0; h < height; h++) {
memcpy(rowDest, rowSource, width*pixelsize);
rowDest += width*pixelsize;
rowSource += stride;
}
stride = width*pixelsize;
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
NS_MIN(GetAddressAlignment((ptrdiff_t)newPixels),
GetAddressAlignment((ptrdiff_t)stride)));
fTexSubImage2D(target,
level,
xoffset,
yoffset,
width,
height,
format,
type,
newPixels);
delete [] newPixels;
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
}
void
GLContext::RectTriangles::addRect(GLfloat x0, GLfloat y0, GLfloat x1, GLfloat y1,
GLfloat tx0, GLfloat ty0, GLfloat tx1, GLfloat ty1,
bool flip_y /* = false */)
{
vert_coord v;
v.x = x0; v.y = y0;
vertexCoords.AppendElement(v);
v.x = x1; v.y = y0;
vertexCoords.AppendElement(v);
v.x = x0; v.y = y1;
vertexCoords.AppendElement(v);
v.x = x0; v.y = y1;
vertexCoords.AppendElement(v);
v.x = x1; v.y = y0;
vertexCoords.AppendElement(v);
v.x = x1; v.y = y1;
vertexCoords.AppendElement(v);
if (flip_y) {
tex_coord t;
t.u = tx0; t.v = ty1;
texCoords.AppendElement(t);
t.u = tx1; t.v = ty1;
texCoords.AppendElement(t);
t.u = tx0; t.v = ty0;
texCoords.AppendElement(t);
t.u = tx0; t.v = ty0;
texCoords.AppendElement(t);
t.u = tx1; t.v = ty1;
texCoords.AppendElement(t);
t.u = tx1; t.v = ty0;
texCoords.AppendElement(t);
} else {
tex_coord t;
t.u = tx0; t.v = ty0;
texCoords.AppendElement(t);
t.u = tx1; t.v = ty0;
texCoords.AppendElement(t);
t.u = tx0; t.v = ty1;
texCoords.AppendElement(t);
t.u = tx0; t.v = ty1;
texCoords.AppendElement(t);
t.u = tx1; t.v = ty0;
texCoords.AppendElement(t);
t.u = tx1; t.v = ty1;
texCoords.AppendElement(t);
}
}
static GLfloat
WrapTexCoord(GLfloat v)
{
// fmodf gives negative results for negative numbers;
// that is, fmodf(0.75, 1.0) == 0.75, but
// fmodf(-0.75, 1.0) == -0.75. For the negative case,
// the result we need is 0.25, so we add 1.0f.
if (v < 0.0f) {
return 1.0f + fmodf(v, 1.0f);
}
return fmodf(v, 1.0f);
}
void
GLContext::DecomposeIntoNoRepeatTriangles(const nsIntRect& aTexCoordRect,
const nsIntSize& aTexSize,
RectTriangles& aRects,
bool aFlipY /* = false */)
{
// normalize this
nsIntRect tcr(aTexCoordRect);
while (tcr.x >= aTexSize.width)
tcr.x -= aTexSize.width;
while (tcr.y >= aTexSize.height)
tcr.y -= aTexSize.height;
// Compute top left and bottom right tex coordinates
GLfloat tl[2] =
{ GLfloat(tcr.x) / GLfloat(aTexSize.width),
GLfloat(tcr.y) / GLfloat(aTexSize.height) };
GLfloat br[2] =
{ GLfloat(tcr.XMost()) / GLfloat(aTexSize.width),
GLfloat(tcr.YMost()) / GLfloat(aTexSize.height) };
// then check if we wrap in either the x or y axis; if we do,
// then also use fmod to figure out the "true" non-wrapping
// texture coordinates.
bool xwrap = false, ywrap = false;
if (tcr.x < 0 || tcr.x > aTexSize.width ||
tcr.XMost() < 0 || tcr.XMost() > aTexSize.width)
{
xwrap = true;
tl[0] = WrapTexCoord(tl[0]);
br[0] = WrapTexCoord(br[0]);
}
if (tcr.y < 0 || tcr.y > aTexSize.height ||
tcr.YMost() < 0 || tcr.YMost() > aTexSize.height)
{
ywrap = true;
tl[1] = WrapTexCoord(tl[1]);
br[1] = WrapTexCoord(br[1]);
}
NS_ASSERTION(tl[0] >= 0.0f && tl[0] <= 1.0f &&
tl[1] >= 0.0f && tl[1] <= 1.0f &&
br[0] >= 0.0f && br[0] <= 1.0f &&
br[1] >= 0.0f && br[1] <= 1.0f,
"Somehow generated invalid texture coordinates");
// If xwrap is false, the texture will be sampled from tl[0]
// .. br[0]. If xwrap is true, then it will be split into tl[0]
// .. 1.0, and 0.0 .. br[0]. Same for the Y axis. The
// destination rectangle is also split appropriately, according
// to the calculated xmid/ymid values.
// There isn't a 1:1 mapping between tex coords and destination coords;
// when computing midpoints, we have to take that into account. We
// need to map the texture coords, which are (in the wrap case):
// |tl->1| and |0->br| to the |0->1| range of the vertex coords. So
// we have the length (1-tl)+(br) that needs to map into 0->1.
// These are only valid if there is wrap involved, they won't be used
// otherwise.
GLfloat xlen = (1.0f - tl[0]) + br[0];
GLfloat ylen = (1.0f - tl[1]) + br[1];
NS_ASSERTION(!xwrap || xlen > 0.0f, "xlen isn't > 0, what's going on?");
NS_ASSERTION(!ywrap || ylen > 0.0f, "ylen isn't > 0, what's going on?");
NS_ASSERTION(aTexCoordRect.width <= aTexSize.width &&
aTexCoordRect.height <= aTexSize.height, "tex coord rect would cause tiling!");
if (!xwrap && !ywrap) {
aRects.addRect(0.0f, 0.0f,
1.0f, 1.0f,
tl[0], tl[1],
br[0], br[1],
aFlipY);
} else if (!xwrap && ywrap) {
GLfloat ymid = (1.0f - tl[1]) / ylen;
aRects.addRect(0.0f, 0.0f,
1.0f, ymid,
tl[0], tl[1],
br[0], 1.0f,
aFlipY);
aRects.addRect(0.0f, ymid,
1.0f, 1.0f,
tl[0], 0.0f,
br[0], br[1],
aFlipY);
} else if (xwrap && !ywrap) {
GLfloat xmid = (1.0f - tl[0]) / xlen;
aRects.addRect(0.0f, 0.0f,
xmid, 1.0f,
tl[0], tl[1],
1.0f, br[1],
aFlipY);
aRects.addRect(xmid, 0.0f,
1.0f, 1.0f,
0.0f, tl[1],
br[0], br[1],
aFlipY);
} else {
GLfloat xmid = (1.0f - tl[0]) / xlen;
GLfloat ymid = (1.0f - tl[1]) / ylen;
aRects.addRect(0.0f, 0.0f,
xmid, ymid,
tl[0], tl[1],
1.0f, 1.0f,
aFlipY);
aRects.addRect(xmid, 0.0f,
1.0f, ymid,
0.0f, tl[1],
br[0], 1.0f,
aFlipY);
aRects.addRect(0.0f, ymid,
xmid, 1.0f,
tl[0], 0.0f,
1.0f, br[1],
aFlipY);
aRects.addRect(xmid, ymid,
1.0f, 1.0f,
0.0f, 0.0f,
br[0], br[1],
aFlipY);
}
}
void
GLContext::UseBlitProgram()
{
if (mBlitProgram) {
fUseProgram(mBlitProgram);
return;
}
mBlitProgram = fCreateProgram();
GLuint shaders[2];
shaders[0] = fCreateShader(LOCAL_GL_VERTEX_SHADER);
shaders[1] = fCreateShader(LOCAL_GL_FRAGMENT_SHADER);
const char *blitVSSrc =
"attribute vec2 aVertex;"
"attribute vec2 aTexCoord;"
"varying vec2 vTexCoord;"
"void main() {"
" vTexCoord = aTexCoord;"
" gl_Position = vec4(aVertex, 0.0, 1.0);"
"}";
const char *blitFSSrc = "#ifdef GL_ES\nprecision mediump float;\n#endif\n"
"uniform sampler2D uSrcTexture;"
"varying vec2 vTexCoord;"
"void main() {"
" gl_FragColor = texture2D(uSrcTexture, vTexCoord);"
"}";
fShaderSource(shaders[0], 1, (const GLchar**) &blitVSSrc, NULL);
fShaderSource(shaders[1], 1, (const GLchar**) &blitFSSrc, NULL);
for (int i = 0; i < 2; ++i) {
GLint success, len = 0;
fCompileShader(shaders[i]);
fGetShaderiv(shaders[i], LOCAL_GL_COMPILE_STATUS, &success);
NS_ASSERTION(success, "Shader compilation failed!");
if (!success) {
nsCAutoString log;
fGetShaderiv(shaders[i], LOCAL_GL_INFO_LOG_LENGTH, (GLint*) &len);
log.SetCapacity(len);
fGetShaderInfoLog(shaders[i], len, (GLint*) &len, (char*) log.BeginWriting());
log.SetLength(len);
printf_stderr("Shader %d compilation failed:\n%s\n", log.get());
return;
}
fAttachShader(mBlitProgram, shaders[i]);
fDeleteShader(shaders[i]);
}
fBindAttribLocation(mBlitProgram, 0, "aVertex");
fBindAttribLocation(mBlitProgram, 1, "aTexCoord");
fLinkProgram(mBlitProgram);
GLint success, len = 0;
fGetProgramiv(mBlitProgram, LOCAL_GL_LINK_STATUS, &success);
NS_ASSERTION(success, "Shader linking failed!");
if (!success) {
nsCAutoString log;
fGetProgramiv(mBlitProgram, LOCAL_GL_INFO_LOG_LENGTH, (GLint*) &len);
log.SetCapacity(len);
fGetProgramInfoLog(mBlitProgram, len, (GLint*) &len, (char*) log.BeginWriting());
log.SetLength(len);
printf_stderr("Program linking failed:\n%s\n", log.get());
return;
}
fUseProgram(mBlitProgram);
fUniform1i(fGetUniformLocation(mBlitProgram, "uSrcTexture"), 0);
}
void
GLContext::SetBlitFramebufferForDestTexture(GLuint aTexture)
{
if (!mBlitFramebuffer) {
fGenFramebuffers(1, &mBlitFramebuffer);
}
fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, mBlitFramebuffer);
fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER,
LOCAL_GL_COLOR_ATTACHMENT0,
LOCAL_GL_TEXTURE_2D,
aTexture,
0);
GLenum result = fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
if (aTexture && (result != LOCAL_GL_FRAMEBUFFER_COMPLETE)) {
nsCAutoString msg;
msg.Append("Framebuffer not complete -- error 0x");
msg.AppendInt(result, 16);
// Note: if you are hitting this, it is likely that
// your texture is not texture complete -- that is, you
// allocated a texture name, but didn't actually define its
// size via a call to TexImage2D.
NS_RUNTIMEABORT(msg.get());
}
}
#ifdef DEBUG
void
GLContext::CreatedProgram(GLContext *aOrigin, GLuint aName)
{
mTrackedPrograms.AppendElement(NamedResource(aOrigin, aName));
}
void
GLContext::CreatedShader(GLContext *aOrigin, GLuint aName)
{
mTrackedShaders.AppendElement(NamedResource(aOrigin, aName));
}
void
GLContext::CreatedBuffers(GLContext *aOrigin, GLsizei aCount, GLuint *aNames)
{
for (GLsizei i = 0; i < aCount; ++i) {
mTrackedBuffers.AppendElement(NamedResource(aOrigin, aNames[i]));
}
}
void
GLContext::CreatedTextures(GLContext *aOrigin, GLsizei aCount, GLuint *aNames)
{
for (GLsizei i = 0; i < aCount; ++i) {
mTrackedTextures.AppendElement(NamedResource(aOrigin, aNames[i]));
}
}
void
GLContext::CreatedFramebuffers(GLContext *aOrigin, GLsizei aCount, GLuint *aNames)
{
for (GLsizei i = 0; i < aCount; ++i) {
mTrackedFramebuffers.AppendElement(NamedResource(aOrigin, aNames[i]));
}
}
void
GLContext::CreatedRenderbuffers(GLContext *aOrigin, GLsizei aCount, GLuint *aNames)
{
for (GLsizei i = 0; i < aCount; ++i) {
mTrackedRenderbuffers.AppendElement(NamedResource(aOrigin, aNames[i]));
}
}
static void
RemoveNamesFromArray(GLContext *aOrigin, GLsizei aCount, GLuint *aNames, nsTArray<GLContext::NamedResource>& aArray)
{
for (GLsizei j = 0; j < aCount; ++j) {
GLuint name = aNames[j];
// name 0 can be ignored
if (name == 0)
continue;
bool found = false;
for (PRUint32 i = 0; i < aArray.Length(); ++i) {
if (aArray[i].name == name) {
aArray.RemoveElementAt(i);
found = true;
break;
}
}
}
}
void
GLContext::DeletedProgram(GLContext *aOrigin, GLuint aName)
{
RemoveNamesFromArray(aOrigin, 1, &aName, mTrackedPrograms);
}
void
GLContext::DeletedShader(GLContext *aOrigin, GLuint aName)
{
RemoveNamesFromArray(aOrigin, 1, &aName, mTrackedShaders);
}
void
GLContext::DeletedBuffers(GLContext *aOrigin, GLsizei aCount, GLuint *aNames)
{
RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedBuffers);
}
void
GLContext::DeletedTextures(GLContext *aOrigin, GLsizei aCount, GLuint *aNames)
{
RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedTextures);
}
void
GLContext::DeletedFramebuffers(GLContext *aOrigin, GLsizei aCount, GLuint *aNames)
{
RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedFramebuffers);
}
void
GLContext::DeletedRenderbuffers(GLContext *aOrigin, GLsizei aCount, GLuint *aNames)
{
RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedRenderbuffers);
}
static void
MarkContextDestroyedInArray(GLContext *aContext, nsTArray<GLContext::NamedResource>& aArray)
{
for (PRUint32 i = 0; i < aArray.Length(); ++i) {
if (aArray[i].origin == aContext)
aArray[i].originDeleted = true;
}
}
void
GLContext::SharedContextDestroyed(GLContext *aChild)
{
MarkContextDestroyedInArray(aChild, mTrackedPrograms);
MarkContextDestroyedInArray(aChild, mTrackedShaders);
MarkContextDestroyedInArray(aChild, mTrackedTextures);
MarkContextDestroyedInArray(aChild, mTrackedFramebuffers);
MarkContextDestroyedInArray(aChild, mTrackedRenderbuffers);
MarkContextDestroyedInArray(aChild, mTrackedBuffers);
}
static void
ReportArrayContents(const nsTArray<GLContext::NamedResource>& aArray)
{
nsTArray<GLContext::NamedResource> copy(aArray);
copy.Sort();
GLContext *lastContext = NULL;
for (PRUint32 i = 0; i < copy.Length(); ++i) {
if (lastContext != copy[i].origin) {
if (lastContext)
printf_stderr("\n");
printf_stderr(" [%p - %s] ", copy[i].origin, copy[i].originDeleted ? "deleted" : "live");
lastContext = copy[i].origin;
}
printf_stderr("%d ", copy[i].name);
}
printf_stderr("\n");
}
void
GLContext::ReportOutstandingNames()
{
printf_stderr("== GLContext %p ==\n", this);
printf_stderr("Outstanding Textures:\n");
ReportArrayContents(mTrackedTextures);
printf_stderr("Outstanding Buffers:\n");
ReportArrayContents(mTrackedBuffers);
printf_stderr("Outstanding Programs:\n");
ReportArrayContents(mTrackedPrograms);
printf_stderr("Outstanding Shaders:\n");
ReportArrayContents(mTrackedShaders);
printf_stderr("Outstanding Framebuffers:\n");
ReportArrayContents(mTrackedFramebuffers);
printf_stderr("Outstanding Renderbuffers:\n");
ReportArrayContents(mTrackedRenderbuffers);
}
#endif /* DEBUG */
} /* namespace gl */
} /* namespace mozilla */
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