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try to use GL_LUMINANCE first for better performance

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This commit is contained in:
FunkyFr3sh 2018-05-21 22:32:19 +02:00
parent 6d57bbbfcb
commit d8cee91ee8
2 changed files with 10 additions and 6 deletions
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4
inc/paletteshader.h
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@ -19,7 +19,7 @@ const GLchar *PaletteFragShader110Src =
"void main()\n"
"{\n"
" vec4 paletteIndex = texture2D(SurfaceTex, TexCoord0); \n"
" vec4 outTexel = texture2D(PaletteTex, paletteIndex.xy); \n"
" vec4 outTexel = texture2D(PaletteTex, vec2(paletteIndex.r, 0)); \n"
" gl_FragColor = outTexel;\n"
"}\n";
@ -88,6 +88,6 @@ const GLchar *PaletteFragShaderSrc =
"void main()\n"
"{\n"
" vec4 paletteIndex = COMPAT_TEXTURE(SurfaceTex, TEX0.xy);\n"
" vec4 outTexel = COMPAT_TEXTURE(PaletteTex, paletteIndex.xy);\n"
" vec4 outTexel = COMPAT_TEXTURE(PaletteTex, vec2(paletteIndex.r, 0));\n"
" FragColor = outTexel;\n"
"}\n";

12
src/render.c
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@ -107,6 +107,7 @@ DWORD WINAPI render_main(void)
scaleProgram = OpenGL_BuildProgramFromFile(ddraw->shader);
// primary surface texture
GLenum surfaceFormat = GL_LUMINANCE;
GLuint surfaceTexId = 0;
glGenTextures(1, &surfaceTexId);
glBindTexture(GL_TEXTURE_2D, surfaceTexId);
@ -117,13 +118,16 @@ DWORD WINAPI render_main(void)
if (paletteConvProgram)
{
glTexImage2D(GL_TEXTURE_2D, 0, GL_R8, tex_width, tex_height, 0, GL_RED, GL_UNSIGNED_BYTE, 0);
glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE8, tex_width, tex_height, 0, surfaceFormat = GL_LUMINANCE, GL_UNSIGNED_BYTE, 0);
if (glGetError() != GL_NO_ERROR)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RED, tex_width, tex_height, 0, GL_RED, GL_UNSIGNED_BYTE, 0);
glTexImage2D(GL_TEXTURE_2D, 0, GL_R8, tex_width, tex_height, 0, surfaceFormat = GL_RED, GL_UNSIGNED_BYTE, 0);
if (glGetError() != GL_NO_ERROR)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, tex_width, tex_height, 0, GL_RED, GL_UNSIGNED_BYTE, 0);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RED, tex_width, tex_height, 0, surfaceFormat = GL_RED, GL_UNSIGNED_BYTE, 0);
if (glGetError() != GL_NO_ERROR)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, tex_width, tex_height, 0, surfaceFormat = GL_RED, GL_UNSIGNED_BYTE, 0);
}
else
{
@ -450,7 +454,7 @@ DWORD WINAPI render_main(void)
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 256, 1, GL_RGBA, GL_UNSIGNED_BYTE, ddraw->primary->palette->data_bgr);
glBindTexture(GL_TEXTURE_2D, surfaceTexId);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, ddraw->width, ddraw->height, GL_RED, GL_UNSIGNED_BYTE, ddraw->primary->surface);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, ddraw->width, ddraw->height, surfaceFormat, GL_UNSIGNED_BYTE, ddraw->primary->surface);
}
else
{