db7d8281c5
This patch adds an opacity slider to the wireframe overlay. The previous wireframe in dense geometry scenes could be too dark and sometimes the user just wants an impression of the geometry during modelling. Reviewed By: Jeroen Bakker Differential Revision: https://developer.blender.org/D7622
55 lines
1.4 KiB
GLSL
55 lines
1.4 KiB
GLSL
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/* Scene Depth texture copy for manual depth test. */
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uniform sampler2D depthTex;
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flat in vec2 edgeStart;
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#ifndef SELECT_EDGES
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in vec4 finalColor;
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noperspective in vec2 edgePos;
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layout(location = 0) out vec4 fragColor;
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layout(location = 1) out vec4 lineOutput;
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#endif
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void main()
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{
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/* Needed only because of wireframe slider.
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* If we could get rid of it would be nice because of performance drain of discard. */
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if (edgeStart.r == -1.0) {
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discard;
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}
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#ifndef SELECT_EDGES
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lineOutput = pack_line_data(gl_FragCoord.xy, edgeStart, edgePos);
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fragColor = finalColor;
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# ifdef CUSTOM_DEPTH_BIAS
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vec2 dir = lineOutput.xy * 2.0 - 1.0;
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bool dir_horiz = abs(dir.x) > abs(dir.y);
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vec2 uv = gl_FragCoord.xy * sizeViewportInv.xy;
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float depth_occluder = texture(depthTex, uv).r;
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float depth_min = depth_occluder;
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if (dir_horiz) {
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depth_min = min(depth_min, texture(depthTex, uv + vec2(-sizeViewportInv.x, 0.0)).r);
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depth_min = min(depth_min, texture(depthTex, uv + vec2(sizeViewportInv.x, 0.0)).r);
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}
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else {
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depth_min = min(depth_min, texture(depthTex, uv + vec2(0, -sizeViewportInv.y)).r);
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depth_min = min(depth_min, texture(depthTex, uv + vec2(0, sizeViewportInv.y)).r);
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}
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float delta = abs(depth_occluder - depth_min);
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if (gl_FragCoord.z < (depth_occluder + delta) && gl_FragCoord.z > depth_occluder) {
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gl_FragDepth = depth_occluder;
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}
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else {
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gl_FragDepth = gl_FragCoord.z;
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}
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# endif
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#endif
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}
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