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author | Alexandru Croitor <alexandru.croitor@qt.io> | 2019-07-11 14:51:40 +0200 |
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committer | Alexandru Croitor <alexandru.croitor@qt.io> | 2019-07-11 17:24:39 +0200 |
commit | 13374ceb165c44658aa97890c37b206859c9a31c (patch) | |
tree | 562362b196a459ee3449a5a1e60e5216a9dd6984 /src/quickshapes/shaders_ng/lineargradient.vert | |
parent | ae47deba4c943c496412530a8d2a5a688ae12038 (diff) | |
parent | b5d18be5a03406d0aac83856dd41e1525fd14a28 (diff) |
Merge remote-tracking branch 'origin/wip/qt6' into wip/cmake
Change-Id: I2963c1209316fb6755f572969f368970450d7991
Diffstat (limited to 'src/quickshapes/shaders_ng/lineargradient.vert')
-rw-r--r-- | src/quickshapes/shaders_ng/lineargradient.vert | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/quickshapes/shaders_ng/lineargradient.vert b/src/quickshapes/shaders_ng/lineargradient.vert new file mode 100644 index 0000000000..b4eb868186 --- /dev/null +++ b/src/quickshapes/shaders_ng/lineargradient.vert @@ -0,0 +1,22 @@ +#version 440 + +layout(location = 0) in vec4 vertexCoord; +layout(location = 1) in vec4 vertexColor; + +layout(location = 0) out float gradTabIndex; + +layout(std140, binding = 0) uniform buf { + mat4 matrix; + vec2 gradStart; + vec2 gradEnd; + float opacity; +} ubuf; + +out gl_PerVertex { vec4 gl_Position; }; + +void main() +{ + vec2 gradVec = ubuf.gradEnd - ubuf.gradStart; + gradTabIndex = dot(gradVec, vertexCoord.xy - ubuf.gradStart) / (gradVec.x * gradVec.x + gradVec.y * gradVec.y); + gl_Position = ubuf.matrix * vertexCoord; +} |