Diamond75/Panda3DS
1
0
Fork 0
mirror of https://github.com/wheremyfoodat/Panda3DS.git synced 2025-04-09 23:55:40 +12:00
Code Issues Projects Releases Packages Wiki Activity Actions

[GPU] Make the fragment shader GLSL a bit more readable.

Browse source
This commit is contained in:
fleroviux 2023-06-20 21:06:34 +02:00
parent 13a53a9e9d
commit 9386ce319b
1 changed files with 43 additions and 41 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

84
src/core/renderer_gl/renderer_gl.cpp
View file

@ -103,29 +103,30 @@ const char* fragmentShader = R"(
vec4 final;
// TODO: figure out what the undocumented values do
switch (rgb_operand) {
case 0u: final.rgb = rgb_source.rgb; break; // Source color
case 1u: final.rgb = 1.0 - rgb_source.rgb; break; // One minus source color
case 2u: final.rgb = vec3(rgb_source.a); break; // Source alpha
case 3u: final.rgb = vec3(1.0 - rgb_source.a); break; // One minus source alpha
case 4u: final.rgb = vec3(rgb_source.r); break; // Source red
case 5u: final.rgb = vec3(1.0 - rgb_source.r); break; // One minus source red
case 8u: final.rgb = vec3(rgb_source.g); break; // Source green
case 9u: final.rgb = vec3(1.0 - rgb_source.g); break; // One minus source green
case 12u: final.rgb = vec3(rgb_source.b); break; // Source blue
case 13u: final.rgb = vec3(1.0 - rgb_source.b); break; // One minus source blue
default: break; // TODO: figure out what the undocumented values do
case 0u: final.rgb = rgb_source.rgb; break; // Source color
case 1u: final.rgb = 1.0 - rgb_source.rgb; break; // One minus source color
case 2u: final.rgb = vec3(rgb_source.a); break; // Source alpha
case 3u: final.rgb = vec3(1.0 - rgb_source.a); break; // One minus source alpha
case 4u: final.rgb = vec3(rgb_source.r); break; // Source red
case 5u: final.rgb = vec3(1.0 - rgb_source.r); break; // One minus source red
case 8u: final.rgb = vec3(rgb_source.g); break; // Source green
case 9u: final.rgb = vec3(1.0 - rgb_source.g); break; // One minus source green
case 12u: final.rgb = vec3(rgb_source.b); break; // Source blue
case 13u: final.rgb = vec3(1.0 - rgb_source.b); break; // One minus source blue
default: break;
}
switch (alpha_operand) {
case 0u: final.a = alpha_source.a; break; // Source alpha
case 1u: final.a = 1.0 - alpha_source.a; break; // One minus source alpha
case 2u: final.a = alpha_source.r; break; // Source red
case 3u: final.a = 1.0 - alpha_source.r; break; // One minus source red
case 4u: final.a = alpha_source.g; break; // Source green
case 5u: final.a = 1.0 - alpha_source.g; break; // One minus source green
case 6u: final.a = alpha_source.b; break; // Source blue
case 7u: final.a = 1.0 - alpha_source.b; break; // One minus source blue
case 0u: final.a = alpha_source.a; break; // Source alpha
case 1u: final.a = 1.0 - alpha_source.a; break; // One minus source alpha
case 2u: final.a = alpha_source.r; break; // Source red
case 3u: final.a = 1.0 - alpha_source.r; break; // One minus source red
case 4u: final.a = alpha_source.g; break; // Source green
case 5u: final.a = 1.0 - alpha_source.g; break; // One minus source green
case 6u: final.a = alpha_source.b; break; // Source blue
case 7u: final.a = 1.0 - alpha_source.b; break; // One minus source blue
}
return final;
@ -141,33 +142,34 @@ const char* fragmentShader = R"(
vec4 result = vec4(1.0);
// TODO: test if the alpha combiner supports all the same modes as the color combiner.
// TODO: figure out what the undocumented values do
switch (rgb_combine) {
case 0u: result.rgb = source0.rgb; break; // Replace
case 1u: result.rgb = source0.rgb * source1.rgb; break; // Modulate
case 2u: result.rgb = min(vec3(1.0), source0.rgb + source1.rgb); break; // Add
case 3u: result.rgb = clamp(source0.rgb + source1.rgb - 0.5, vec3(0.0), vec3(1.0)); break; // Add signed
case 4u: result.rgb = mix(source1.rgb, source0.rgb, source2.rgb); break; // Interpolate
case 5u: result.rgb = max(vec3(0.0), source0.rgb - source1.rgb); break; // Subtract
case 6u: result.rgb = vec3(4.0 * dot(source0.rgb - 0.5 , source1.rgb - 0.5)); break; // Dot3 RGB
case 7u: result = vec4(4.0 * dot(source0.rgb - 0.5 , source1.rgb - 0.5)); break; // Dot3 RGBA
case 8u: result.rgb = min(vec3(1.0), source0.rgb * source1.rgb + source2.rgb); break; // Multiply then add
case 9u: result.rgb = min(vec3(1.0), (source0.rgb + source1.rgb) * source2.rgb); break; // Add then multiply
default: break; // TODO: figure out what the undocumented values do
case 0u: result.rgb = source0.rgb; break; // Replace
case 1u: result.rgb = source0.rgb * source1.rgb; break; // Modulate
case 2u: result.rgb = min(vec3(1.0), source0.rgb + source1.rgb); break; // Add
case 3u: result.rgb = clamp(source0.rgb + source1.rgb - 0.5, 0.0, 1.0); break; // Add signed
case 4u: result.rgb = mix(source1.rgb, source0.rgb, source2.rgb); break; // Interpolate
case 5u: result.rgb = max(source0.rgb - source1.rgb, 0.0); break; // Subtract
case 6u: result.rgb = vec3(4.0 * dot(source0.rgb - 0.5 , source1.rgb - 0.5)); break; // Dot3 RGB
case 7u: result = vec4(4.0 * dot(source0.rgb - 0.5 , source1.rgb - 0.5)); break; // Dot3 RGBA
case 8u: result.rgb = min(source0.rgb * source1.rgb + source2.rgb, 1.0); break; // Multiply then add
case 9u: result.rgb = min((source0.rgb + source1.rgb) * source2.rgb, 1.0); break; // Add then multiply
default: break;
}
if (rgb_combine != 7u) { // The color combiner also writes the alpha channel in the "Dot3 RGBA" mode.
// TODO: figure out what the undocumented values do
// TODO: test if the alpha combiner supports all the same modes as the color combiner.
switch (alpha_combine) {
case 0u: result.a = source0.a; break; // Replace
case 1u: result.a = source0.a * source1.a; break; // Modulate
case 2u: result.a = min(1.0, source0.a + source1.a); break; // Add
case 3u: result.a = clamp(source0.a + source1.a - 0.5, 0.0, 1.0); break; // Add signed
case 4u: result.a = mix(source1.a, source0.a, source2.a); break; // Interpolate
case 5u: result.a = max(0.0, source0.a - source1.a); break; // Subtract
case 8u: result.a = min(1.0, source0.a * source1.a + source2.a); break; // Multiply then add
case 9u: result.a = min(1.0, (source0.a + source1.a) * source2.a); break; // Add then multiply
default: break; // TODO: figure out what the undocumented values do
case 0u: result.a = source0.a; break; // Replace
case 1u: result.a = source0.a * source1.a; break; // Modulate
case 2u: result.a = min(1.0, source0.a + source1.a); break; // Add
case 3u: result.a = clamp(source0.a + source1.a - 0.5, 0.0, 1.0); break; // Add signed
case 4u: result.a = mix(source1.a, source0.a, source2.a); break; // Interpolate
case 5u: result.a = max(0.0, source0.a - source1.a); break; // Subtract
case 8u: result.a = min(1.0, source0.a * source1.a + source2.a); break; // Multiply then add
case 9u: result.a = min(1.0, (source0.a + source1.a) * source2.a); break; // Add then multiply
default: break;
}
}