Implemented dither noise #492
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Archez
reviewed
Apr 19, 2024
Archez
reviewed
Apr 19, 2024
Archez
reviewed
Apr 19, 2024
Archez
reviewed
Apr 19, 2024
src/graphic/Fast3D/gfx_pc.cpp
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| @@ -3886,7 +3898,7 @@ void gfx_run(Gfx* commands, const std::unordered_map<Mtx*, MtxF>& mtx_replacemen | |||
| !game_renders_to_framebuffer); | |||
| gfx_rapi->start_frame(); | |||
| gfx_rapi->start_draw_to_framebuffer(game_renders_to_framebuffer ? game_framebuffer : 0, | |||
| (float)gfx_current_dimensions.height / gfx_native_dimensions.height); | |||
| gfx_calculate_noise_scale(), g_rdp.alpha_test_value); | |||
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Passing in alpha_test_value through start_draw_to_framebuffer means that the value is only read and set once at the very beginning of the frame.
But you implemented gfx_dp_set_blend_color which influences this value, but it'll never be updated to the shader this way.
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| if (cc_features.opt_alpha && cc_features.opt_noise) { | ||
| append_line( | ||
| fs_buf, &fs_len, | ||
| "texel.a = alphaDither(random(vec3(floor(gl_FragCoord.xy * noise_scale), float(frame_count))), texel.a);"); | ||
| } else if (cc_features.opt_noise) { | ||
| append_line(fs_buf, &fs_len, | ||
| "texel.a *= floor(clamp(random(vec3(floor(gl_FragCoord.xy * noise_scale), float(frame_count))) + " | ||
| "texel.a, 0.0, 1.0));"); | ||
| "texel.rgb = colorDither(random(vec3(floor(gl_FragCoord.xy * noise_scale), float(frame_count))), " | ||
| "texel.rgb);"); | ||
| } |
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At least from what I can see in MM, it is possible for aplha dithering and color dithering to be applied at the same time. This if / if else does not allow that currently.
We may even need to split opt_noise into two values, or something so that we can control which is used.
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(cherry picked from commit 7321c1a)