Orkuncakilkaya
65c1b9ca5c
r3d_hdr_calibrate(peak, paper, black) feeds the tonemap's and the overlay's HDR10 variants and the display's HDR metadata; ov_hdr_nits draws a calibration patch at a number of nits. gpu_caps_probe asks the running Vulkan renderer's instance instead of making and destroying a second one under Streamline's interposer, which left the next swapchain rebuild calling address 0. The overlay gets an HDR10 variant, and the tonemap brightens HDR highlights by one factor rather than per channel. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
39 lines
1.6 KiB
GLSL
39 lines
1.6 KiB
GLSL
// 2D overlay: an image texture, the font atlas (white glyphs on alpha) or a flat colour, times a
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// colour. Which one is the vertex's own: v carries 4 x the mode (0 image, 1 font, 2 flat) on top of
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// its real coordinate, so text, panels and an image's quads share a draw (overlay.ludic, ov_use_tex).
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in vec2 v_uv;
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in vec4 v_col;
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uniform sampler2D u_tex;
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uniform sampler2D u_font;
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out vec4 o_color;
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#ifdef HDR10
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// the interface is sRGB: drawn into an HDR10 frame its white sits at the player's paper white, as the
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// picture's white does. u_hdr_scale multiplies that for one batch (ov_hdr_nits): a calibration
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// screen's test patches, which have to reach past paper white to the display's peak.
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uniform float u_hdr_paper;
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uniform float u_hdr_scale;
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vec3 bt709_to_2020(vec3 c) {
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return mat3(0.6274, 0.0691, 0.0164, 0.3293, 0.9195, 0.0880, 0.0433, 0.0114, 0.8956) * c;
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}
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vec3 pq_encode(vec3 nits) {
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const float m1 = 0.1593017578125, m2 = 78.84375, c1 = 0.8359375, c2 = 18.8515625, c3 = 18.6875;
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vec3 yp = pow(clamp(nits / 10000.0, 0.0, 1.0), vec3(m1));
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return pow((c1 + c2 * yp) / (1.0 + c3 * yp), vec3(m2));
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}
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#endif
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void main() {
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float mode = floor((v_uv.y + 0.5) * 0.25);
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vec2 uv = vec2(v_uv.x, v_uv.y - 4.0 * mode);
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if (mode > 1.5) {
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o_color = v_col;
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} else if (mode > 0.5) {
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o_color = vec4(v_col.rgb, v_col.a * texture(u_font, uv).a);
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} else {
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vec4 t = texture(u_tex, uv);
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o_color = vec4(v_col.rgb * t.rgb, v_col.a * t.a);
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}
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#ifdef HDR10
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float nits = max(u_hdr_paper, 80.0) * max(u_hdr_scale, 0.0);
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o_color.rgb = pq_encode(bt709_to_2020(pow(max(o_color.rgb, vec3(0.0)), vec3(2.2))) * nits);
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#endif
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}
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