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- implemented shader support for rendering the SW renderer canvas with legacy OpenGL.

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This commit is contained in:
Christoph Oelckers 2018-04-08 13:04:44 +02:00
commit 94e8d59dde
7 changed files with 43 additions and 11 deletions
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25
src/gl/compatibility/gl_20.cpp
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@ -130,6 +130,31 @@ void gl_PatchMenu()
void gl_SetTextureMode(int type)
{
if (type == TM_SWCANVAS)
{
int shader = V_IsTrueColor() ? 2 : 0;
float c1[4], c2[4];
if (gl_RenderState.mColormapState > CM_DEFAULT && gl_RenderState.mColormapState < CM_MAXCOLORMAP)
{
FSpecialColormap *scm = &SpecialColormaps[gl_RenderState.mColormapState - CM_FIRSTSPECIALCOLORMAP];
for (int i = 0; i < 3; i++)
{
c1[i] = scm->ColorizeStart[i];
c2[i] = scm->ColorizeEnd[i] - scm->ColorizeStart[i];
}
c1[3] = 0;
c2[3] = 0;
shader++;
}
// Type 2 (unaltered true color) can be done without activating the shader.
if (shader != 2)
{
GLRenderer->legacyShaders->BindShader(shader, c1, c2);
return;
}
else type = TM_MODULATE;
}
glUseProgram(0);
if (type == TM_MASK)
{
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);