OrdinaryMagician/vkdoom_m
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Create a shadowmap texture and upload light list

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This commit is contained in:
Magnus Norddahl 2017-03-01 17:17:33 +01:00
commit 62c285f7b3
5 changed files with 111 additions and 7 deletions
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38
src/gl/renderer/gl_renderbuffers.cpp
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@ -741,6 +741,44 @@ void FGLRenderBuffers::BindEyeFB(int eye, bool readBuffer)
glBindFramebuffer(readBuffer ? GL_READ_FRAMEBUFFER : GL_FRAMEBUFFER, mEyeFBs[eye]);
}
//==========================================================================
//
// Shadow map texture and frame buffers
//
//==========================================================================
void FGLRenderBuffers::BindShadowMapFB()
{
CreateShadowMap();
glBindFramebuffer(GL_FRAMEBUFFER, mShadowMapFB);
}
void FGLRenderBuffers::BindShadowMapTexture(int texunit)
{
CreateShadowMap();
glActiveTexture(GL_TEXTURE0 + texunit);
glBindTexture(GL_TEXTURE_2D, mShadowMapTexture);
}
void FGLRenderBuffers::CreateShadowMap()
{
if (mShadowMapTexture != 0)
return;
GLint activeTex, textureBinding, frameBufferBinding;
glGetIntegerv(GL_ACTIVE_TEXTURE, &activeTex);
glActiveTexture(GL_TEXTURE0);
glGetIntegerv(GL_TEXTURE_BINDING_2D, &textureBinding);
glGetIntegerv(GL_FRAMEBUFFER_BINDING, &frameBufferBinding);
mShadowMapTexture = Create2DTexture("ShadowMap", GL_R32F, 1024, 1024);
mShadowMapFB = CreateFrameBuffer("ShadowMapFB", mShadowMapTexture);
glBindTexture(GL_TEXTURE_2D, textureBinding);
glActiveTexture(activeTex);
glBindFramebuffer(GL_FRAMEBUFFER, frameBufferBinding);
}
//==========================================================================
//
// Makes the scene frame buffer active (multisample, depth, stecil, etc.)