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Fix for Mali devices

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This commit is contained in:
izzy2lost
2026-01-02 22:16:00 -05:00
parent 613a68d209
commit ab686a16cc
1 changed files with 45 additions and 7 deletions
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android/app/src/main/cpp/gles_presenter.cpp
+45 -7
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@@ -1,6 +1,7 @@
#include "gles_presenter.h"
#include <GLES3/gl3.h>
#include <SDL.h>
#include <algorithm>
#include <cstring>
@@ -8,7 +9,31 @@
namespace {
static GLuint Compile(GLenum type, const char* src)
{
if (!src) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "GlesPresenter: null shader source");
return 0;
}
// Mali drivers can be strict about #version being the first token.
// Trim leading BOM/whitespace/newlines before passing to the compiler.
const unsigned char* u = reinterpret_cast<const unsigned char*>(src);
if (u[0] == 0xEF && u[1] == 0xBB && u[2] == 0xBF) {
src += 3;
}
while (*src) {
const unsigned char c = static_cast<unsigned char>(*src);
if (c == ' ' || c == '\t' || c == '\r' || c == '\n') {
++src;
continue;
}
break;
}
GLuint sh = glCreateShader(type);
if (!sh) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "GlesPresenter: glCreateShader(%u) failed (err=0x%x)", (unsigned)type, (unsigned)glGetError());
return 0;
}
glShaderSource(sh, 1, &src, nullptr);
glCompileShader(sh);
GLint ok = 0;
@@ -18,6 +43,10 @@ static GLuint Compile(GLenum type, const char* src)
char log[2048];
GLsizei n = 0;
glGetShaderInfoLog(sh, (GLsizei)sizeof(log), &n, log);
log[(n >= (GLsizei)sizeof(log)) ? ((GLsizei)sizeof(log) - 1) : n] = '\0';
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "GlesPresenter: shader compile failed (%s):\n%s",
(type == GL_VERTEX_SHADER) ? "VS" : (type == GL_FRAGMENT_SHADER) ? "FS" : "UNKNOWN",
log);
glDeleteShader(sh);
return 0;
}
@@ -56,10 +85,11 @@ void GlesPresenter::Shutdown()
bool GlesPresenter::CreateProgram()
{
static const char* vs = R"glsl(
#version 300 es
layout(location=0) in vec2 aPos;
layout(location=1) in vec2 aUv;
static const char* vs = R"glsl(#version 300 es
precision highp float;
precision highp int;
in vec2 aPos;
in vec2 aUv;
out vec2 vUv;
void main() {
vUv = aUv;
@@ -67,12 +97,13 @@ bool GlesPresenter::CreateProgram()
}
)glsl";
static const char* fs = R"glsl(
#version 300 es
static const char* fs = R"glsl(#version 300 es
precision mediump float;
precision mediump int;
precision lowp sampler2D;
in vec2 vUv;
uniform sampler2D uTex;
out vec4 oColor;
layout(location=0) out vec4 oColor;
void main() {
oColor = texture(uTex, vUv);
}
@@ -90,6 +121,8 @@ bool GlesPresenter::CreateProgram()
m_program = glCreateProgram();
glAttachShader(m_program, v);
glAttachShader(m_program, f);
glBindAttribLocation(m_program, 0, "aPos");
glBindAttribLocation(m_program, 1, "aUv");
glLinkProgram(m_program);
glDeleteShader(v);
glDeleteShader(f);
@@ -98,6 +131,11 @@ bool GlesPresenter::CreateProgram()
glGetProgramiv(m_program, GL_LINK_STATUS, &ok);
if (!ok)
{
char log[2048];
GLsizei n = 0;
glGetProgramInfoLog(m_program, (GLsizei)sizeof(log), &n, log);
log[(n >= (GLsizei)sizeof(log)) ? ((GLsizei)sizeof(log) - 1) : n] = '\0';
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "GlesPresenter: program link failed:\n%s", log);
glDeleteProgram(m_program);
m_program = 0;
return false;