diff options
| author | weigao <weigao@multicorewareinc.com> | 2014-06-18 01:10:05 -0700 |
|---|---|---|
| committer | Markus Mohrhard <markus.mohrhard@collabora.co.uk> | 2014-06-21 04:21:40 +0200 |
| commit | 87e23f425f60b0b7459c63b824bc8bdc17796ad2 (patch) | |
| tree | 042bfc2ab2847cf9a1900cb738eb59f7c5f3c333 /chart2/opengl | |
| parent | f4436dcb95b341dbb8d2c58e6c7bf1ceb2ffbc10 (diff) | |
use shader to calculate alpha channel
Conflicts:
chart2/source/view/main/GL3DRenderer.cxx
Change-Id: I3cf9636b36ffd47589dd3ab61278802ca73644ce
Diffstat (limited to 'chart2/opengl')
| -rw-r--r-- | chart2/opengl/screenTextFragmentShader.glsl | 3 | ||||
| -rw-r--r-- | chart2/opengl/textFragmentShader.glsl | 3 |
2 files changed, 4 insertions, 2 deletions
diff --git a/chart2/opengl/screenTextFragmentShader.glsl b/chart2/opengl/screenTextFragmentShader.glsl index a8481034210a..7e2bd26e1069 100644 --- a/chart2/opengl/screenTextFragmentShader.glsl +++ b/chart2/opengl/screenTextFragmentShader.glsl @@ -11,7 +11,8 @@ varying vec2 vTexCoord; uniform sampler2D TextTex; void main() { - gl_FragColor = vec4(texture2D(TextTex, vTexCoord).rgba); + vec3 color = texture2D(TextTex, vTexCoord).rgb; + gl_FragColor = vec4(color, 1.0 - color.r); } /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ diff --git a/chart2/opengl/textFragmentShader.glsl b/chart2/opengl/textFragmentShader.glsl index ef8d44d6949d..c1d44bc56f63 100644 --- a/chart2/opengl/textFragmentShader.glsl +++ b/chart2/opengl/textFragmentShader.glsl @@ -11,7 +11,8 @@ uniform sampler2D TextTex; varying vec2 vTexCoord; void main() { - gl_FragColor = vec4(texture2D(TextTex, vTexCoord).rgba); + vec3 color = texture2D(TextTex, vTexCoord).rgb; + gl_FragColor = vec4(color, 1.0 - color.r); } /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |