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Porting GL4 geometry shaders. Likely not working.

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This commit is contained in:
Ben Vanik
2016-02-20 16:35:21 -08:00
parent 769c58a9b2
commit b5a0c4715b
19 changed files with 2079 additions and 15 deletions
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101
src/xenia/gpu/vulkan/shaders/rect_list.geom Normal file
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// NOTE: This file is compiled and embedded into the exe.
// Use `xenia-build genspirv` and check in any changes under bin/.
#version 450
#extension all : warn
in gl_PerVertex {
vec4 gl_Position;
float gl_PointSize;
float gl_ClipDistance[];
} gl_in[];
out gl_PerVertex {
vec4 gl_Position;
float gl_PointSize;
float gl_ClipDistance[];
};
struct VertexData {
vec4 o[16];
};
layout(location = 1) in VertexData in_vtx[];
layout(location = 1) out VertexData out_vtx;
layout(triangles) in;
layout(triangle_strip, max_vertices = 6) out;
void main() {
// Most games use the left-aligned form.
bool left_aligned = gl_in[0].gl_Position.x == gl_in[2].gl_Position.x;
if (left_aligned) {
// 0 ------ 1
// | - |
// | // |
// | - |
// 2 ----- [3]
gl_Position = gl_in[0].gl_Position;
gl_PointSize = gl_in[0].gl_PointSize;
out_vtx = in_vtx[0];
EmitVertex();
gl_Position = gl_in[1].gl_Position;
gl_PointSize = gl_in[1].gl_PointSize;
out_vtx = in_vtx[1];
EmitVertex();
gl_Position = gl_in[2].gl_Position;
gl_PointSize = gl_in[2].gl_PointSize;
out_vtx = in_vtx[2];
EmitVertex();
EndPrimitive();
gl_Position = gl_in[2].gl_Position;
gl_PointSize = gl_in[2].gl_PointSize;
out_vtx = in_vtx[2];
EmitVertex();
gl_Position = gl_in[1].gl_Position;
gl_PointSize = gl_in[1].gl_PointSize;
out_vtx = in_vtx[1];
EmitVertex();
gl_Position = (gl_in[1].gl_Position + gl_in[2].gl_Position) -
gl_in[0].gl_Position;
gl_PointSize = gl_in[2].gl_PointSize;
for (int i = 0; i < 16; ++i) {
out_vtx.o[i] = -in_vtx[0].o[i] + in_vtx[1].o[i] + in_vtx[2].o[i];
}
EmitVertex();
EndPrimitive();
} else {
// 0 ------ 1
// | - |
// | \\ |
// | - |
// [3] ----- 2
gl_Position = gl_in[0].gl_Position;
gl_PointSize = gl_in[0].gl_PointSize;
out_vtx = in_vtx[0];
EmitVertex();
gl_Position = gl_in[1].gl_Position;
gl_PointSize = gl_in[1].gl_PointSize;
out_vtx = in_vtx[1];
EmitVertex();
gl_Position = gl_in[2].gl_Position;
gl_PointSize = gl_in[2].gl_PointSize;
out_vtx = in_vtx[2];
EmitVertex();
EndPrimitive();
gl_Position = gl_in[0].gl_Position;
gl_PointSize = gl_in[0].gl_PointSize;
out_vtx = in_vtx[0];
EmitVertex();
gl_Position = gl_in[2].gl_Position;
gl_PointSize = gl_in[2].gl_PointSize;
out_vtx = in_vtx[2];
EmitVertex();
gl_Position = (gl_in[0].gl_Position + gl_in[2].gl_Position) -
gl_in[1].gl_Position;
gl_PointSize = gl_in[2].gl_PointSize;
for (int i = 0; i < 16; ++i) {
out_vtx.o[i] = in_vtx[0].o[i] + -in_vtx[1].o[i] + in_vtx[2].o[i];
}
EmitVertex();
EndPrimitive();
}
}