c9eef1d7cd
Add uUseTexture==2 (RGBA modulate) branch to ui_text.frag so dat sprites can be drawn through the existing 2D batcher without touching the font path. TextRenderer gains _spriteBufs (per-GL-handle List<float>), DrawSprite(), and a Flush block that issues one draw call per distinct texture with uUseTexture=2. Also adds DepthMask(false) in the state-save block (restored to true after) to prevent the transparent-quad pass from writing depth and corrupting the 3D scene if the UI is flushed mid-frame. TextureCache gains GetOrUpload(surfaceId, out width, out height) — caches pixel dimensions alongside the GL handle so UI 9-slice geometry can compute slice UVs from the source image size without a second decode. UiRenderContext gains a DrawSprite forwarder that applies the current 2D translate stack, matching the DrawRect / DrawRectOutline pattern. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
21 lines
584 B
GLSL
21 lines
584 B
GLSL
#version 430 core
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in vec2 vUv;
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in vec4 vColor;
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out vec4 FragColor;
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uniform sampler2D uTex;
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uniform int uUseTexture;
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void main() {
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if (uUseTexture == 1) {
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// Font atlas is a single-channel R8 texture; red = coverage alpha.
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float coverage = texture(uTex, vUv).r;
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FragColor = vec4(vColor.rgb, vColor.a * coverage);
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} else if (uUseTexture == 2) {
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// RGBA dat sprite (decoded to RGBA8); modulate by tint/alpha.
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FragColor = texture(uTex, vUv) * vColor;
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} else {
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FragColor = vColor;
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}
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if (FragColor.a < 0.005) discard;
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}
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