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perf: optimize text rendering performance

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zhenyan121
2026-03-28 16:22:38 +08:00
parent c37c45ad19
commit a7c42f249d
6 changed files with 89 additions and 47 deletions
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10
src/shaders/text_f_shader.glsl
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@@ -1,12 +1,14 @@
#version 460
in vec2 texCoord;
out vec4 color;
in vec2 tc;
flat in int tex_layer;
layout (binding = 0) uniform sampler2D text;
layout (binding = 0) uniform sampler2DArray text;
uniform vec3 textColor;
out vec4 color;
void main(void) {
vec4 smapled = vec4(1.0, 1.0, 1.0, texture(text, texCoord).r);
vec4 smapled = vec4(1.0, 1.0, 1.0, texture(text, vec3(tc, tex_layer)).r);
color = vec4(textColor, 1.0) * smapled;
}

12
src/shaders/text_v_shader.glsl
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@@ -1,11 +1,15 @@
#version 460
layout (location = 0) in vec4 vertex;
out vec2 texCoord;
layout (location = 0) in vec2 pos;
layout (location = 1) in vec2 texCoord;
layout (location = 2) in float layer;
out vec2 tc;
flat out int tex_layer;
uniform mat4 projection;
void main(void) {
gl_Position = projection * vec4(vertex.xy, 0.0, 1.0);
texCoord = vec2(vertex.zw);
gl_Position = projection * vec4(pos, 0.0, 1.0);
tc = texCoord;
tex_layer = int(layer);
}