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Make HW lighting calculation optional.

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This commit is contained in:
Sergey Lipskiy 2013-05-18 23:22:46 +07:00
parent b7e89b71b1
commit b6b80d720f
1 changed files with 35 additions and 27 deletions
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62
GLSLCombiner.cpp
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@ -163,32 +163,35 @@ static const char* fragment_shader_header_lod_variables =
static const char* fragment_shader_header_common_functions =
" \n"
"float calc_light() { \n"
" input_color = gl_Color.rgb; \n"
" if (int(secondary_color.r) == 0) \n"
" return 1.0; \n"
" float full_intensity = 0.0; \n"
" int nLights = int(secondary_color.r); \n"
" input_color = vec3(gl_LightSource[nLights].ambient); \n"
" vec3 lightDir, lightColor; \n"
" float intensity; \n"
" vec3 n = normalize(gl_Color.rgb); \n"
" for (int i = 0; i < nLights; i++) { \n"
" lightDir = vec3(gl_LightSource[i].position); \n"
" intensity = max(dot(n,lightDir),0.0); \n"
" full_intensity += intensity; \n"
" lightColor = vec3(gl_LightSource[i].ambient)*intensity;\n"
" input_color += lightColor; \n"
" }; \n"
" return full_intensity; \n"
"} \n"
" \n"
"float snoise(vec2 v); \n"
#ifdef USE_TOONIFY
"void toonify(in float intensity); \n"
#endif
;
static const char* fragment_shader_calc_light =
" \n"
"float calc_light() { \n"
" input_color = gl_Color.rgb; \n"
" if (int(secondary_color.r) == 0) \n"
" return 1.0; \n"
" float full_intensity = 0.0; \n"
" int nLights = int(secondary_color.r); \n"
" input_color = vec3(gl_LightSource[nLights].ambient); \n"
" vec3 lightDir, lightColor; \n"
" float intensity; \n"
" vec3 n = normalize(gl_Color.rgb); \n"
" for (int i = 0; i < nLights; i++) { \n"
" lightDir = vec3(gl_LightSource[i].position); \n"
" intensity = max(dot(n,lightDir),0.0); \n"
" full_intensity += intensity; \n"
" lightColor = vec3(gl_LightSource[i].ambient)*intensity; \n"
" input_color += lightColor; \n"
" }; \n"
" return full_intensity; \n"
"} \n"
;
static const char* fragment_shader_calc_lod =
" \n"
"vec2 fetchTex(in ivec2 screenpos) { \n"
@ -251,6 +254,8 @@ static const char* fragment_shader_header_main =
"layout(pixel_center_integer) in vec4 gl_FragCoord; \n"
"void main() \n"
"{ \n"
" if (dither_enabled > 0) \n"
" if (snoise(noiseCoord2D) < 0.0) discard; \n"
" vec4 vec_color, combined_color; \n"
" float alpha1, alpha2; \n"
" vec3 color1, color2; \n"
@ -672,15 +677,15 @@ GLSLCombiner::GLSLCombiner(Combiner *_color, Combiner *_alpha) {
} else
strcat(strCombiner, " color2 = color1; \n");
bool bUseLod = (m_nInputs & (1<<LOD_FRACTION)) > 0;
if (bUseLod)
const bool bUseLod = (m_nInputs & (1<<LOD_FRACTION)) > 0;
if (bUseLod) {
strcat(fragment_shader, fragment_shader_header_lod_variables);
strcat(fragment_shader, fragment_shader_header_common_functions);
if (bUseLod)
strcat(fragment_shader, fragment_shader_calc_lod);
}
if (bHWLightingCalculation)
strcat(fragment_shader, fragment_shader_calc_light);
strcat(fragment_shader, fragment_shader_header_common_functions);
strcat(fragment_shader, fragment_shader_header_main);
strcat(fragment_shader, " if (dither_enabled > 0) \n");
strcat(fragment_shader, " if (snoise(noiseCoord2D) < 0.0) discard; \n");
if (bUseLod)
strcat(fragment_shader, " float lod_frac = calc_lod(); \n");
if ((m_nInputs & ((1<<TEXEL0)|(1<<TEXEL1)|(1<<TEXEL0_ALPHA)|(1<<TEXEL1_ALPHA))) > 0) {
@ -689,7 +694,10 @@ GLSLCombiner::GLSLCombiner(Combiner *_color, Combiner *_alpha) {
} else {
assert(strstr(strCombiner, "readtex") == 0);
}
strcat(fragment_shader, " float intensity = calc_light(); \n");
if (bHWLightingCalculation)
strcat(fragment_shader, " float intensity = calc_light(); \n");
else
strcat(fragment_shader, " input_color = gl_Color.rgb;\n");
strcat(fragment_shader, " vec_color = vec4(input_color, gl_Color.a); \n");
strcat(fragment_shader, strCombiner);
strcat(fragment_shader, " gl_FragColor = vec4(color2, alpha2); \n");