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[Vulkan] Use epsilon equality for checking rectangle list form.

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gibbed
2018-11-26 11:51:02 -06:00
parent af206addd1
commit 2398b1b8f4
3 changed files with 511 additions and 490 deletions
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9
src/xenia/gpu/vulkan/shaders/rect_list.geom
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@@ -28,10 +28,15 @@ layout(location = 16) out vec2 _out_point_coord_unused;
layout(triangles) in;
layout(triangle_strip, max_vertices = 6) out;
bool equalsEpsilon(vec2 left, vec2 right, float epsilon) {
return all(lessThanEqual(abs(left - right), vec2(epsilon)));
}
void main() {
// Most games use a left-aligned form.
if (gl_in[0].gl_Position.xy == vec2(gl_in[2].gl_Position.x, gl_in[1].gl_Position.y) ||
gl_in[0].gl_Position.xy == vec2(gl_in[1].gl_Position.x, gl_in[2].gl_Position.y)) {
if (equalsEpsilon(gl_in[0].gl_Position.xy, vec2(gl_in[2].gl_Position.x, gl_in[1].gl_Position.y), 0.001) ||
equalsEpsilon(gl_in[0].gl_Position.xy, vec2(gl_in[1].gl_Position.x, gl_in[2].gl_Position.y), 0.001)) {
// 0 ------ 1 0: -1,-1
// | - | 1: 1,-1
// | // | 2: -1, 1