Ancurio/mkxp-freebird
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Hookup mkxp to run under a OpenGL ES 2.0 context

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This commit is contained in:
Jonas Kulla 2014-07-19 14:26:42 +00:00
parent a310318c65
commit 6f17b6ff46
4 changed files with 88 additions and 25 deletions
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33
src/shader.cpp
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@ -25,6 +25,7 @@
#include "exception.h"
#include <assert.h>
#include <string.h>
#include <iostream>
#include "../sprite.frag.xxd"
@ -107,6 +108,34 @@ void Shader::unbind()
glState.program.set(0);
}
static const char *glesHeader = "precision mediump float;\n";
static const size_t glesHeaderSize = strlen(glesHeader);
static void setupShaderSource(GLuint shader,
const unsigned char *src, int srcSize)
{
GLuint shaderSrcN;
const GLchar *shaderSrc[2];
GLint shaderSrcSize[2];
if (gl.glsles)
{
shaderSrcN = 2;
shaderSrc[0] = glesHeader;
shaderSrc[1] = (const GLchar*) src;
shaderSrcSize[0] = glesHeaderSize;
shaderSrcSize[1] = srcSize;
}
else
{
shaderSrcN = 1;
shaderSrc[0] = (const GLchar*) src;
shaderSrcSize[0] = srcSize;
}
gl.ShaderSource(shader, shaderSrcN, shaderSrc, shaderSrcSize);
}
void Shader::init(const unsigned char *vert, int vertSize,
const unsigned char *frag, int fragSize,
const char *vertName, const char *fragName,
@ -115,7 +144,7 @@ void Shader::init(const unsigned char *vert, int vertSize,
GLint success;
/* Compile vertex shader */
gl.ShaderSource(vertShader, 1, (const GLchar**) &vert, (const GLint*) &vertSize);
setupShaderSource(vertShader, vert, vertSize);
gl.CompileShader(vertShader);
gl.GetShaderiv(vertShader, GL_COMPILE_STATUS, &success);
@ -129,7 +158,7 @@ void Shader::init(const unsigned char *vert, int vertSize,
}
/* Compile fragment shader */
gl.ShaderSource(fragShader, 1, (const GLchar**) &frag, (const GLint*) &fragSize);
setupShaderSource(fragShader, frag, fragSize);
gl.CompileShader(fragShader);
gl.GetShaderiv(fragShader, GL_COMPILE_STATUS, &success);