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Add shader content

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This commit is contained in:
Vincent Lejeune 2014-11-15 20:43:44 +01:00
parent 7e3c2c4897
commit a7b8ba13cd
2 changed files with 82 additions and 0 deletions
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41
data/shaders/blurshadowH.comp
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uniform sampler2D source;
uniform layout(rgba16f) restrict writeonly image2D dest;
uniform vec2 pixel;
uniform float sigma;
// Gaussian separated blur with radius 6.
layout (local_size_x = 8, local_size_y = 8) in;
shared float local_src[8 + 2 * 6][8];
void main()
{
int x = int(gl_LocalInvocationID.x), y = int(gl_LocalInvocationID.y);
ivec2 iuv = ivec2(gl_GlobalInvocationID.x, gl_GlobalInvocationID.y);
vec2 uv_m = (iuv - ivec2(6, 0)) * pixel;
vec2 uv = iuv * pixel;
vec2 uv_p = (iuv + ivec2(6, 0)) * pixel;
local_src[x][y] = texture(source, uv_m).x;
local_src[x + 6][y] = texture(source, uv).x;
local_src[x + 12][y] = texture(source, uv_p).x;
barrier();
float g0, g1, g2;
g0 = 1.0 / (sqrt(2.0 * 3.14) * sigma);
g1 = exp(-0.5 / (sigma * sigma));
g2 = g1 * g1;
float sum = local_src[x + 6][y] * g0;
g0 *= g1;
g1 *= g2;
for (int i = 1; i < 6; i++) {
sum += local_src[6 + x - i][y] * g0;
sum += local_src[6 + x + i][y] * g0;
g0 *= g1;
g1 *= g2;
}
imageStore(dest, iuv, vec4(sum));
}

41
data/shaders/blurshadowV.comp
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uniform sampler2D source;
uniform layout(rgba16f) restrict writeonly image2D dest;
uniform vec2 pixel;
uniform float sigma;
// Gaussian separated blur with radius 6.
layout (local_size_x = 8, local_size_y = 8) in;
shared float local_src[8][8 + 2 * 6];
void main()
{
int x = int(gl_LocalInvocationID.x), y = int(gl_LocalInvocationID.y);
ivec2 iuv = ivec2(gl_GlobalInvocationID.x, gl_GlobalInvocationID.y);
vec2 uv_m = (iuv - ivec2(0, 6)) * pixel;
vec2 uv = iuv * pixel;
vec2 uv_p = (iuv + ivec2(0, 6)) * pixel;
local_src[x][y] = texture(source, uv_m).x;
local_src[x][y + 6] = texture(source, uv).x;
local_src[x][y + 12] = texture(source, uv_p).x;
barrier();
float g0, g1, g2;
g0 = 1.0 / (sqrt(2.0 * 3.14) * sigma);
g1 = exp(-0.5 / (sigma * sigma));
g2 = g1 * g1;
floar sum = local_src[x][y + 6] * g0;
g0 *= g1;
g1 *= g2;
for (int i = 1; i < 6; i++) {
sum += local_src[x][6 + y - i] * g0;
sum += local_src[x][6 + y + i] * g0;
g0 *= g1;
g1 *= g2;
}
imageStore(dest, iuv, vec4(sum));
}