27 lines
964 B
GLSL
27 lines
964 B
GLSL
#version 450 core
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#extension GL_ARB_shader_draw_parameters : require
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layout(location = 0) in vec4 in_position;
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layout(location = 1) in vec4 in_color;
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layout(location = 2) in int in_refVertexIndex;
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layout(location = 0) out vec4 out_color;
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out gl_PerVertex {
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vec4 gl_Position;
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};
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void main() {
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vec2 perVertex = vec2(in_position.x, in_position.y);
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vec2 perInstance[5] = vec2[5](vec2(0.0, 0.0), vec2(-0.3, 0.0), vec2(0.0, 0.3), vec2(0.5, 0.5), vec2(0.75, -0.8));
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vec4 colors[4] = vec4[4](vec4(1.0), vec4(0.0, 0.0, 1.0, 1.0), vec4(0.0, 1.0, 0.0, 1.0), vec4(0.0, 1.0, 1.0, 1.0));
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int baseInstanceIndex = gl_InstanceIndex - gl_BaseInstanceARB;
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gl_Position = vec4(perVertex + perInstance[baseInstanceIndex], 0.0, 1.0);
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if ((gl_VertexIndex - gl_BaseVertexARB) == in_refVertexIndex && gl_DrawIDARB == 0)
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out_color = in_color * colors[baseInstanceIndex];
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else
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out_color = vec4(1.0, 0.0, 0.0, 1.0);
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}
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