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GP: Redo blur z-depth fix 

The problem with previous fix was that only the original pixels were blurred, but the surrounding pixels no.
This commit is contained in:
Antonio Vazquez 2018-10-02 11:09:17 +02:00
parent c03ceb0f61
commit dc689fe407
1 changed files with 15 additions and 2 deletions
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17
source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_blur_frag.glsl
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@ -25,8 +25,21 @@ void main()
float dy = (ProjectionMatrix[3][3] == 0.0) ? (noffset[1] / (nloc.z * defaultpixsize)) : (noffset[1] / defaultpixsize);
/* apply blurring, using a 9-tap filter with predefined gaussian weights */
/* depth */
gl_FragDepth = texelFetch(strokeDepth, ivec2(uv.x, uv.y), 0).r;
/* depth (get the minimum value of the surrounding pixels) */
float outdepth = 0;
outdepth = texelFetch(strokeDepth, ivec2(uv.x - 1.0 * dx, uv.y + 1.0 * dy), 0).r;
outdepth = min(outdepth, texelFetch(strokeDepth, ivec2(uv.x - 0.0 * dx, uv.y + 1.0 * dy), 0).r);
outdepth = min(outdepth, texelFetch(strokeDepth, ivec2(uv.x + 1.0 * dx, uv.y + 1.0 * dy), 0).r);
outdepth = min(outdepth, texelFetch(strokeDepth, ivec2(uv.x - 1.0 * dx, uv.y + 0.0 * dy), 0).r);
outdepth = min(outdepth, texelFetch(strokeDepth, ivec2(uv.x, uv.y), 0).r);
outdepth = min(outdepth, texelFetch(strokeDepth, ivec2(uv.x + 1.0 * dx, uv.y + 0.0 * dy), 0).r);
outdepth = min(outdepth, texelFetch(strokeDepth, ivec2(uv.x - 1.0 * dx, uv.y - 1.0 * dy), 0).r);
outdepth = min(outdepth, texelFetch(strokeDepth, ivec2(uv.x + 0.0 * dx, uv.y - 1.0 * dy), 0).r);
outdepth = min(outdepth, texelFetch(strokeDepth, ivec2(uv.x + 1.0 * dx, uv.y - 1.0 * dy), 0).r);
gl_FragDepth = outdepth;
/* color */
vec4 outcolor = vec4(0.0);