mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
592d9d4482
--HG-- extra : rebase_source : cbba1bb1995a35e7238b40a6819274d2fb15a40c extra : source : 0f5fc69cd1f616e224ff5837f4c7486c126197e0
539 lines
16 KiB
C++
539 lines
16 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "WebGLContext.h"
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#include "GLContext.h"
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#include "WebGLBuffer.h"
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#include "WebGLVertexArray.h"
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namespace mozilla {
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void
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WebGLContext::UpdateBoundBuffer(GLenum target, WebGLBuffer* buffer)
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{
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WebGLRefPtr<WebGLBuffer>& bufferSlot = GetBufferSlotByTarget(target);
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bufferSlot = buffer;
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if (!buffer)
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return;
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/* https://www.khronos.org/registry/webgl/specs/latest/2.0/#5.1
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*
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* In the WebGL 2 API, buffers have their WebGL buffer type
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* initially set to undefined. Calling bindBuffer, bindBufferRange
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* or bindBufferBase with the target argument set to any buffer
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* binding point except COPY_READ_BUFFER or COPY_WRITE_BUFFER will
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* then set the WebGL buffer type of the buffer being bound
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* according to the table above.
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*
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* Any call to one of these functions which attempts to bind a
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* WebGLBuffer that has the element array WebGL buffer type to a
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* binding point that falls under other data, or bind a
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* WebGLBuffer which has the other data WebGL buffer type to
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* ELEMENT_ARRAY_BUFFER will generate an INVALID_OPERATION error,
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* and the state of the binding point will remain untouched.
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*/
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if (target != LOCAL_GL_COPY_READ_BUFFER && target != LOCAL_GL_COPY_WRITE_BUFFER)
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buffer->BindTo(target);
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}
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void
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WebGLContext::UpdateBoundBufferIndexed(GLenum target, GLuint index, WebGLBuffer* buffer)
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{
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UpdateBoundBuffer(target, buffer);
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WebGLRefPtr<WebGLBuffer>& bufferIndexSlot =
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GetBufferSlotByTargetIndexed(target, index);
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bufferIndexSlot = buffer;
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}
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void
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WebGLContext::BindBuffer(GLenum target, WebGLBuffer* buffer)
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{
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if (IsContextLost())
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return;
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if (!ValidateObjectAllowDeletedOrNull("bindBuffer", buffer))
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return;
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// silently ignore a deleted buffer
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if (buffer && buffer->IsDeleted())
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return;
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if (!ValidateBufferTarget(target, "bindBuffer"))
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return;
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if (!ValidateBufferForTarget(target, buffer, "bindBuffer"))
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return;
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WebGLContextUnchecked::BindBuffer(target, buffer);
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UpdateBoundBuffer(target, buffer);
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}
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void
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WebGLContext::BindBufferBase(GLenum target, GLuint index, WebGLBuffer* buffer)
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{
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if (IsContextLost())
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return;
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if (!ValidateObjectAllowDeletedOrNull("bindBufferBase", buffer))
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return;
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// silently ignore a deleted buffer
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if (buffer && buffer->IsDeleted())
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return;
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// ValidateBufferTarget
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switch (target) {
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case LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER:
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if (index >= mGLMaxTransformFeedbackSeparateAttribs)
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return ErrorInvalidValue("bindBufferBase: index should be less than "
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"MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS");
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case LOCAL_GL_UNIFORM_BUFFER:
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if (index >= mGLMaxUniformBufferBindings)
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return ErrorInvalidValue("bindBufferBase: index should be less than "
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"MAX_UNIFORM_BUFFER_BINDINGS");
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default:
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return ErrorInvalidEnumInfo("bindBufferBase: target", target);
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}
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if (!ValidateBufferForTarget(target, buffer, "bindBufferBase"))
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return;
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WebGLContextUnchecked::BindBufferBase(target, index, buffer);
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UpdateBoundBufferIndexed(target, index, buffer);
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}
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void
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WebGLContext::BindBufferRange(GLenum target, GLuint index, WebGLBuffer* buffer,
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WebGLintptr offset, WebGLsizeiptr size)
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{
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if (IsContextLost())
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return;
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if (!ValidateObjectAllowDeletedOrNull("bindBufferRange", buffer))
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return;
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// silently ignore a deleted buffer
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if (buffer && buffer->IsDeleted())
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return;
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// ValidateBufferTarget
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switch (target) {
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case LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER:
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if (index >= mGLMaxTransformFeedbackSeparateAttribs)
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return ErrorInvalidValue("bindBufferRange: index should be less than "
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"MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS");
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case LOCAL_GL_UNIFORM_BUFFER:
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if (index >= mGLMaxUniformBufferBindings)
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return ErrorInvalidValue("bindBufferRange: index should be less than "
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"MAX_UNIFORM_BUFFER_BINDINGS");
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default:
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return ErrorInvalidEnumInfo("bindBufferRange: target", target);
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}
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if (!ValidateBufferForTarget(target, buffer, "bindBufferRange"))
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return;
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WebGLContextUnchecked::BindBufferRange(target, index, buffer, offset, size);
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UpdateBoundBufferIndexed(target, index, buffer);
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}
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void
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WebGLContext::BufferData(GLenum target, WebGLsizeiptr size, GLenum usage)
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{
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if (IsContextLost())
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return;
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if (!ValidateBufferTarget(target, "bufferData"))
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return;
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WebGLRefPtr<WebGLBuffer>& bufferSlot = GetBufferSlotByTarget(target);
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if (size < 0)
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return ErrorInvalidValue("bufferData: negative size");
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if (!ValidateBufferUsageEnum(usage, "bufferData: usage"))
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return;
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// careful: WebGLsizeiptr is always 64-bit, but GLsizeiptr is like intptr_t.
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if (!CheckedInt<GLsizeiptr>(size).isValid())
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return ErrorOutOfMemory("bufferData: bad size");
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WebGLBuffer* boundBuffer = bufferSlot.get();
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if (!boundBuffer)
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return ErrorInvalidOperation("bufferData: no buffer bound!");
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UniquePtr<uint8_t> zeroBuffer((uint8_t*)moz_calloc(size, 1));
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if (!zeroBuffer)
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return ErrorOutOfMemory("bufferData: out of memory");
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MakeContextCurrent();
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InvalidateBufferFetching();
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GLenum error = CheckedBufferData(target, size, zeroBuffer.get(), usage);
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if (error) {
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GenerateWarning("bufferData generated error %s", ErrorName(error));
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return;
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}
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boundBuffer->SetByteLength(size);
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if (!boundBuffer->ElementArrayCacheBufferData(nullptr, size)) {
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return ErrorOutOfMemory("bufferData: out of memory");
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}
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}
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void
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WebGLContext::BufferData(GLenum target,
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const dom::Nullable<dom::ArrayBuffer>& maybeData,
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GLenum usage)
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{
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if (IsContextLost())
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return;
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if (maybeData.IsNull()) {
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// see http://www.khronos.org/bugzilla/show_bug.cgi?id=386
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return ErrorInvalidValue("bufferData: null object passed");
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}
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if (!ValidateBufferTarget(target, "bufferData"))
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return;
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const WebGLRefPtr<WebGLBuffer>& bufferSlot = GetBufferSlotByTarget(target);
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const dom::ArrayBuffer& data = maybeData.Value();
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data.ComputeLengthAndData();
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// Careful: data.Length() could conceivably be any uint32_t, but GLsizeiptr
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// is like intptr_t.
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if (!CheckedInt<GLsizeiptr>(data.Length()).isValid())
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return ErrorOutOfMemory("bufferData: bad size");
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if (!ValidateBufferUsageEnum(usage, "bufferData: usage"))
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return;
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WebGLBuffer* boundBuffer = bufferSlot.get();
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if (!boundBuffer)
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return ErrorInvalidOperation("bufferData: no buffer bound!");
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MakeContextCurrent();
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InvalidateBufferFetching();
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GLenum error = CheckedBufferData(target, data.Length(), data.Data(), usage);
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if (error) {
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GenerateWarning("bufferData generated error %s", ErrorName(error));
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return;
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}
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boundBuffer->SetByteLength(data.Length());
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if (!boundBuffer->ElementArrayCacheBufferData(data.Data(), data.Length()))
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return ErrorOutOfMemory("bufferData: out of memory");
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}
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void
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WebGLContext::BufferData(GLenum target, const dom::ArrayBufferView& data,
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GLenum usage)
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{
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if (IsContextLost())
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return;
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if (!ValidateBufferTarget(target, "bufferData"))
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return;
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WebGLRefPtr<WebGLBuffer>& bufferSlot = GetBufferSlotByTarget(target);
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if (!ValidateBufferUsageEnum(usage, "bufferData: usage"))
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return;
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WebGLBuffer* boundBuffer = bufferSlot.get();
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if (!boundBuffer)
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return ErrorInvalidOperation("bufferData: no buffer bound!");
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data.ComputeLengthAndData();
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// Careful: data.Length() could conceivably be any uint32_t, but GLsizeiptr
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// is like intptr_t.
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if (!CheckedInt<GLsizeiptr>(data.Length()).isValid())
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return ErrorOutOfMemory("bufferData: bad size");
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InvalidateBufferFetching();
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MakeContextCurrent();
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GLenum error = CheckedBufferData(target, data.Length(), data.Data(), usage);
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if (error) {
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GenerateWarning("bufferData generated error %s", ErrorName(error));
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return;
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}
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boundBuffer->SetByteLength(data.Length());
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if (!boundBuffer->ElementArrayCacheBufferData(data.Data(), data.Length()))
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return ErrorOutOfMemory("bufferData: out of memory");
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}
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void
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WebGLContext::BufferSubData(GLenum target, WebGLsizeiptr byteOffset,
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const dom::Nullable<dom::ArrayBuffer>& maybeData)
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{
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if (IsContextLost())
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return;
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if (maybeData.IsNull()) {
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// see http://www.khronos.org/bugzilla/show_bug.cgi?id=386
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return;
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}
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if (!ValidateBufferTarget(target, "bufferSubData"))
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return;
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WebGLRefPtr<WebGLBuffer>& bufferSlot = GetBufferSlotByTarget(target);
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if (byteOffset < 0)
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return ErrorInvalidValue("bufferSubData: negative offset");
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WebGLBuffer* boundBuffer = bufferSlot.get();
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if (!boundBuffer)
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return ErrorInvalidOperation("bufferData: no buffer bound!");
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const dom::ArrayBuffer& data = maybeData.Value();
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data.ComputeLengthAndData();
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CheckedInt<WebGLsizeiptr> checked_neededByteLength =
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CheckedInt<WebGLsizeiptr>(byteOffset) + data.Length();
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if (!checked_neededByteLength.isValid()) {
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ErrorInvalidValue("bufferSubData: Integer overflow computing the needed"
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" byte length.");
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return;
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}
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if (checked_neededByteLength.value() > boundBuffer->ByteLength()) {
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ErrorInvalidValue("bufferSubData: Not enough data. Operation requires"
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" %d bytes, but buffer only has %d bytes.",
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checked_neededByteLength.value(),
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boundBuffer->ByteLength());
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return;
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}
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boundBuffer->ElementArrayCacheBufferSubData(byteOffset, data.Data(),
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data.Length());
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MakeContextCurrent();
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gl->fBufferSubData(target, byteOffset, data.Length(), data.Data());
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}
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void
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WebGLContext::BufferSubData(GLenum target, WebGLsizeiptr byteOffset,
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const dom::ArrayBufferView& data)
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{
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if (IsContextLost())
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return;
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if (!ValidateBufferTarget(target, "bufferSubData"))
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return;
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WebGLRefPtr<WebGLBuffer>& bufferSlot = GetBufferSlotByTarget(target);
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if (byteOffset < 0)
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return ErrorInvalidValue("bufferSubData: negative offset");
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WebGLBuffer* boundBuffer = bufferSlot.get();
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if (!boundBuffer)
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return ErrorInvalidOperation("bufferSubData: no buffer bound!");
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data.ComputeLengthAndData();
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CheckedInt<WebGLsizeiptr> checked_neededByteLength =
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CheckedInt<WebGLsizeiptr>(byteOffset) + data.Length();
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if (!checked_neededByteLength.isValid()) {
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ErrorInvalidValue("bufferSubData: Integer overflow computing the needed"
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" byte length.");
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return;
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}
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if (checked_neededByteLength.value() > boundBuffer->ByteLength()) {
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ErrorInvalidValue("bufferSubData: Not enough data. Operation requires"
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" %d bytes, but buffer only has %d bytes.",
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checked_neededByteLength.value(),
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boundBuffer->ByteLength());
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return;
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}
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boundBuffer->ElementArrayCacheBufferSubData(byteOffset, data.Data(),
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data.Length());
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MakeContextCurrent();
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gl->fBufferSubData(target, byteOffset, data.Length(), data.Data());
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}
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already_AddRefed<WebGLBuffer>
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WebGLContext::CreateBuffer()
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{
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if (IsContextLost())
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return nullptr;
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GLuint buf = 0;
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MakeContextCurrent();
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gl->fGenBuffers(1, &buf);
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nsRefPtr<WebGLBuffer> globj = new WebGLBuffer(this, buf);
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return globj.forget();
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}
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void
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WebGLContext::DeleteBuffer(WebGLBuffer* buffer)
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{
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if (IsContextLost())
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return;
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if (!ValidateObjectAllowDeletedOrNull("deleteBuffer", buffer))
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return;
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if (!buffer || buffer->IsDeleted())
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return;
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if (mBoundArrayBuffer == buffer)
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BindBuffer(LOCAL_GL_ARRAY_BUFFER, static_cast<WebGLBuffer*>(nullptr));
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if (mBoundVertexArray->mElementArrayBuffer == buffer) {
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BindBuffer(LOCAL_GL_ELEMENT_ARRAY_BUFFER,
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static_cast<WebGLBuffer*>(nullptr));
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}
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for (int32_t i = 0; i < mGLMaxVertexAttribs; i++) {
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if (mBoundVertexArray->HasAttrib(i) &&
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mBoundVertexArray->mAttribs[i].buf == buffer)
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{
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mBoundVertexArray->mAttribs[i].buf = nullptr;
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}
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}
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buffer->RequestDelete();
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}
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bool
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WebGLContext::IsBuffer(WebGLBuffer* buffer)
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{
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if (IsContextLost())
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return false;
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return ValidateObjectAllowDeleted("isBuffer", buffer) &&
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!buffer->IsDeleted() &&
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buffer->HasEverBeenBound();
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}
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bool
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WebGLContext::ValidateBufferUsageEnum(GLenum target, const char* info)
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{
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switch (target) {
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case LOCAL_GL_STREAM_DRAW:
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case LOCAL_GL_STATIC_DRAW:
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case LOCAL_GL_DYNAMIC_DRAW:
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return true;
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default:
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break;
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}
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ErrorInvalidEnumInfo(info, target);
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return false;
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}
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WebGLRefPtr<WebGLBuffer>&
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WebGLContext::GetBufferSlotByTarget(GLenum target)
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{
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/* This function assumes that target has been validated for either
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* WebGL1 or WebGL2.
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*/
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switch (target) {
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case LOCAL_GL_ARRAY_BUFFER:
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return mBoundArrayBuffer;
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case LOCAL_GL_COPY_READ_BUFFER:
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return mBoundCopyReadBuffer;
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case LOCAL_GL_COPY_WRITE_BUFFER:
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return mBoundCopyWriteBuffer;
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case LOCAL_GL_ELEMENT_ARRAY_BUFFER:
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return mBoundVertexArray->mElementArrayBuffer;
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case LOCAL_GL_PIXEL_PACK_BUFFER:
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return mBoundPixelPackBuffer;
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case LOCAL_GL_PIXEL_UNPACK_BUFFER:
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return mBoundPixelUnpackBuffer;
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case LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER:
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return mBoundTransformFeedbackBuffer;
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case LOCAL_GL_UNIFORM_BUFFER:
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return mBoundUniformBuffer;
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default:
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MOZ_CRASH("Should not get here.");
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}
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}
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WebGLRefPtr<WebGLBuffer>&
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WebGLContext::GetBufferSlotByTargetIndexed(GLenum target, GLuint index)
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{
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/* This function assumes that target has been validated for either WebGL1 or WebGL. */
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switch (target) {
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case LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER:
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MOZ_ASSERT(index < mGLMaxTransformFeedbackSeparateAttribs);
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return mBoundTransformFeedbackBuffers[index];
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case LOCAL_GL_UNIFORM_BUFFER:
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MOZ_ASSERT(index < mGLMaxUniformBufferBindings);
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return mBoundUniformBuffers[index];
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default:
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MOZ_CRASH("Should not get here.");
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}
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}
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GLenum
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WebGLContext::CheckedBufferData(GLenum target, GLsizeiptr size,
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const GLvoid* data, GLenum usage)
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{
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#ifdef XP_MACOSX
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// bug 790879
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if (gl->WorkAroundDriverBugs() &&
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int64_t(size) > INT32_MAX) // cast avoids a potential always-true warning on 32bit
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{
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GenerateWarning("Rejecting valid bufferData call with size %lu to avoid"
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" a Mac bug", size);
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return LOCAL_GL_INVALID_VALUE;
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}
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#endif
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WebGLRefPtr<WebGLBuffer>& bufferSlot = GetBufferSlotByTarget(target);
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WebGLBuffer* boundBuffer = bufferSlot.get();
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MOZ_ASSERT(boundBuffer, "No buffer bound for this target.");
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bool sizeChanges = uint32_t(size) != boundBuffer->ByteLength();
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if (sizeChanges) {
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GetAndFlushUnderlyingGLErrors();
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gl->fBufferData(target, size, data, usage);
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GLenum error = GetAndFlushUnderlyingGLErrors();
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return error;
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} else {
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gl->fBufferData(target, size, data, usage);
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return LOCAL_GL_NO_ERROR;
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}
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}
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} // namespace mozilla
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