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Fixed UV texture coordinate scale when using GL_ARB_texture_non_power_of_two

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Sam Lantinga 2014-08-18 11:28:16 -07:00
parent f4d3303c9e
commit 877666e237
1 changed files with 8 additions and 4 deletions
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12
src/render/opengl/SDL_shaders_gl.c
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@ -150,7 +150,7 @@ static const char *shader_source[NUM_SHADERS][2] =
" yuv.x = texture2D(tex0, tcoord).r;\n"
"\n"
" // Get the U and V values \n"
" tcoord *= 0.5;\n"
" tcoord *= UVCoordScale;\n"
" yuv.y = texture2D(tex1, tcoord).r;\n"
" yuv.z = texture2D(tex2, tcoord).r;\n"
"\n"
@ -201,7 +201,7 @@ static const char *shader_source[NUM_SHADERS][2] =
" yuv.x = texture2D(tex0, tcoord).r;\n"
"\n"
" // Get the U and V values \n"
" tcoord *= 0.5;\n"
" tcoord *= UVCoordScale;\n"
" yuv.yz = texture2D(tex1, tcoord).ra;\n"
"\n"
" // Do the color transform \n"
@ -251,7 +251,7 @@ static const char *shader_source[NUM_SHADERS][2] =
" yuv.x = texture2D(tex0, tcoord).r;\n"
"\n"
" // Get the U and V values \n"
" tcoord *= 0.5;\n"
" tcoord *= UVCoordScale;\n"
" yuv.yz = texture2D(tex1, tcoord).ar;\n"
"\n"
" // Do the color transform \n"
@ -318,7 +318,11 @@ CompileShaderProgram(GL_ShaderContext *ctx, int index, GL_ShaderData *data)
if (ctx->GL_ARB_texture_rectangle_supported) {
frag_defines =
"#define sampler2D sampler2DRect\n"
"#define texture2D texture2DRect\n";
"#define texture2D texture2DRect\n"
"#define UVCoordScale 0.5\n";
} else {
frag_defines =
"#define UVCoordScale 1.0\n";
}
/* Create one program object to rule them all */