101 lines
2.3 KiB
GLSL
101 lines
2.3 KiB
GLSL
#version 450
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#extension GL_KHR_vulkan_glsl : enable
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//#include "ShaderDescriptorDefinitions.glsl"
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// vertex inputs
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layout(location = 0) in vec4 positionalOffset;
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layout(location = 1) in uint glyphIndex;
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// between shader stages
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layout(location = 0) out struct
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{
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vec4 vertPos; // location 0
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vec2 uv; // location = 1
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vec4 normal; // location = 2
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} Out;
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// material stuff
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layout(location = 3) out struct
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{
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uint eid;
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vec4 textColor;
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} Out2;
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// Camera data
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layout(set = 1, binding = 0) uniform CameraData
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{
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vec4 position;
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mat4 vpMat;
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mat4 viewMat;
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mat4 projMat;
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} cameraData;
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// push constants
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layout(std140, push_constant) uniform TestPushConstant
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{
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mat4 worldTransform;
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uint eid;
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vec4 textColor;
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} testPushConstant;
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// Descriptor sets
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layout(std430, set = 2, binding = 1) buffer GlyphTransforms
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{
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mat4 matrices[];
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} glyphTransforms;
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vec2 CreateQuad(in uint vertexID)
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{
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uint b = 1 << vertexID;
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return vec2 ((0x3 & b) != 0, (0x9 & b) != 0);
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}
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void main()
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{
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// write EID data to FS
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Out2.eid = testPushConstant.eid;
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// local variable for font index
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uint fontIndex = glyphIndex;
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// get font data
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mat4 fontData = glyphTransforms.matrices[fontIndex];
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// Generate UV coords and vertex positions
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Out.uv = CreateQuad(gl_VertexIndex);
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vec3 vertexPos = vec3(Out.uv, 0.0f);
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// Get the local matrices
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mat4 localModel = testPushConstant.worldTransform;
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//mat4 uiScale = mat4(1.0f);
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//uiScale[0][0] = cameraData.cameraRight / 20.49f;
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//uiScale[1][1] = cameraData.cameraTop / 11.323f;
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// transform the UV to atlas space to sample the font bitmap correctly
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Out.uv = vec2(mat3(fontData) * vec3(Out.uv, 1.0f));
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// Matrix to transform the quad from local to font space (for a font to be of correct size)
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mat3 toFontSpace = mat3(1.0f);
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toFontSpace[0][0] = fontData[3][0];
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toFontSpace[1][1] = fontData[3][1];
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toFontSpace[2][0] = positionalOffset.x;
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toFontSpace[2][1] = positionalOffset.y;
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// Initialize variables for use in FS
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//characterIndex = gl_InstanceID;
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// Transform the vertices to font space
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vertexPos = toFontSpace * vec3(vertexPos.xy, 1.0f);
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vertexPos.z = 0.0f;
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Out2.textColor = testPushConstant.textColor;
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// transform the vertex position to font space
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gl_Position = cameraData.projMat * localModel * vec4(vertexPos, 1.0f);
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// gl_Position = vec4(vertexPos, 1.0f);
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} |