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Implemented dither noise #492
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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.
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.
(cherry picked from commit 7321c1a)