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vulkan: store tex vertices in buffer

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This commit is contained in:
Julian Orth 2025-02-27 16:41:18 +01:00
parent 73611fd287
commit 9534da89a2
4 changed files with 100 additions and 47 deletions
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16
src/gfx_apis/vulkan/shaders/tex.common.glsl
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@ -1,5 +1,15 @@
#extension GL_EXT_buffer_reference : require
struct Vertex {
vec2 pos[4];
vec2 tex_pos[4];
};
layout(buffer_reference, buffer_reference_align = 8, std430) buffer Vertices {
Vertex vertices[];
};
layout(push_constant, std430) uniform Data {
layout(offset = 0) vec2 pos[4];
layout(offset = 32) vec2 tex_pos[4];
layout(offset = 64) float mul;
Vertices vertices;
float mul;
} data;

13
src/gfx_apis/vulkan/shaders/tex.vert
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@ -1,18 +1,11 @@
#version 450
//#extension GL_EXT_debug_printf : enable
#include "tex.common.glsl"
layout(location = 0) out vec2 tex_pos;
void main() {
vec2 pos;
switch (gl_VertexIndex) {
case 0: pos = data.pos[0]; tex_pos = data.tex_pos[0]; break;
case 1: pos = data.pos[1]; tex_pos = data.tex_pos[1]; break;
case 2: pos = data.pos[2]; tex_pos = data.tex_pos[2]; break;
case 3: pos = data.pos[3]; tex_pos = data.tex_pos[3]; break;
}
gl_Position = vec4(pos, 0.0, 1.0);
// debugPrintfEXT("gl_Position = %v4f, tex_pos = %v2f", gl_Position, tex_pos);
Vertex vertex = data.vertices.vertices[gl_InstanceIndex];
gl_Position = vec4(vertex.pos[gl_VertexIndex], 0.0, 1.0);
tex_pos = vertex.tex_pos[gl_VertexIndex];
}