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Updated particle fire shaders (Fixes #259)

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saschawillems 2016-12-19 20:21:44 +01:00
parent a88ddff390
commit ef26748142
8 changed files with 45 additions and 41 deletions
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33
data/shaders/particlefire/particle.vert
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@ -11,10 +11,9 @@ layout (location = 4) in float inRotation;
layout (location = 5) in int inType;
layout (location = 0) out vec4 outColor;
layout (location = 1) out float outPointSize;
layout (location = 2) out float outAlpha;
layout (location = 3) out flat int outType;
layout (location = 4) out float outRotation;
layout (location = 1) out float outAlpha;
layout (location = 2) out flat int outType;
layout (location = 3) out float outRotation;
layout (binding = 0) uniform UBO
{
@ -24,27 +23,27 @@ layout (binding = 0) uniform UBO
float pointSize;
} ubo;
out gl_PerVertex
{
vec4 gl_Position;
float gl_PointSize;
};
void main ()
{
gl_PointSize = ubo.pointSize;
outColor = inColor;
outAlpha = inAlpha;
outType = inType;
outRotation = inRotation;
vec4 eyePos = ubo.modelview * vec4(inPos.xyz, 1.0);
vec4 projVoxel = ubo.projection * vec4(ubo.pointSize, ubo.pointSize, eyePos.z, eyePos.w);
vec2 projSize = ubo.viewportDim * projVoxel.xy / projVoxel.w;
outPointSize = inSize * 0.25 * (projSize.x + projSize.y);
gl_PointSize = outPointSize;
gl_Position = ubo.projection * ubo.modelview * vec4(inPos.xyz, 1.0);
float pointDist = (gl_Position.w == 0.0) ? 0.00001 : gl_Position.w;
float viewportAR = ubo.viewportDim.x / ubo.viewportDim.y;
gl_PointSize = (((inSize * 2048.0 * viewportAR) / pointDist) * viewportAR);
// Base size of the point sprites
float spriteSize = 8.0 * inSize;
// Scale particle size depending on camera projection
vec4 eyePos = ubo.modelview * vec4(inPos.xyz, 1.0);
vec4 projectedCorner = ubo.projection * vec4(0.5 * spriteSize, 0.5 * spriteSize, eyePos.z, eyePos.w);
gl_PointSize = ubo.viewportDim.x * projectedCorner.x / projectedCorner.w;
}