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OpenGL2: Direct state access, part 3: Framebuffers.

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This commit is contained in:
SmileTheory 2016-01-20 06:32:50 -08:00
parent f70e9dac01
commit 28ff383061
6 changed files with 192 additions and 239 deletions
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85
code/renderergl2/tr_dsa.c
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@ -28,6 +28,10 @@ static struct
GLenum texunit;
GLuint program;
GLuint drawFramebuffer;
GLuint readFramebuffer;
GLuint renderbuffer;
}
glDsaState;
@ -197,3 +201,84 @@ GLvoid APIENTRY GLDSA_ProgramUniformMatrix4fv(GLuint program, GLint location,
GL_UseProgramObject(program);
qglUniformMatrix4fvARB(location, count, transpose, value);
}
void GL_BindNullFramebuffers()
{
qglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
glDsaState.drawFramebuffer = glDsaState.readFramebuffer = 0;
qglBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
glDsaState.readFramebuffer = 0;
}
void GL_BindFramebuffer(GLenum target, GLuint framebuffer)
{
switch (target)
{
case GL_FRAMEBUFFER_EXT:
if (framebuffer != glDsaState.drawFramebuffer || framebuffer != glDsaState.readFramebuffer)
{
qglBindFramebufferEXT(target, framebuffer);
glDsaState.drawFramebuffer = glDsaState.readFramebuffer = framebuffer;
}
break;
case GL_DRAW_FRAMEBUFFER_EXT:
if (framebuffer != glDsaState.drawFramebuffer)
{
qglBindFramebufferEXT(target, framebuffer);
glDsaState.drawFramebuffer = framebuffer;
}
break;
case GL_READ_FRAMEBUFFER_EXT:
if (framebuffer != glDsaState.readFramebuffer)
{
qglBindFramebufferEXT(target, framebuffer);
glDsaState.readFramebuffer = framebuffer;
}
break;
}
}
void GL_BindRenderbuffer(GLuint renderbuffer)
{
if (renderbuffer != glDsaState.renderbuffer)
{
qglBindRenderbufferEXT(GL_RENDERBUFFER_EXT, renderbuffer);
glDsaState.renderbuffer = renderbuffer;
}
}
GLvoid APIENTRY GLDSA_NamedRenderbufferStorage(GLuint renderbuffer,
GLenum internalformat, GLsizei width, GLsizei height)
{
GL_BindRenderbuffer(renderbuffer);
qglRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, internalformat, width, height);
}
GLvoid APIENTRY GLDSA_NamedRenderbufferStorageMultisample(GLuint renderbuffer,
GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height)
{
GL_BindRenderbuffer(renderbuffer);
qglRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, samples, internalformat, width, height);
}
GLenum APIENTRY GLDSA_CheckNamedFramebufferStatus(GLuint framebuffer, GLenum target)
{
GL_BindFramebuffer(target, framebuffer);
return qglCheckFramebufferStatusEXT(target);
}
GLvoid APIENTRY GLDSA_NamedFramebufferTexture2D(GLuint framebuffer,
GLenum attachment, GLenum textarget, GLuint texture, GLint level)
{
GL_BindFramebuffer(GL_FRAMEBUFFER_EXT, framebuffer);
qglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, attachment, textarget, texture, level);
}
GLvoid APIENTRY GLDSA_NamedFramebufferRenderbuffer(GLuint framebuffer,
GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer)
{
GL_BindFramebuffer(GL_FRAMEBUFFER_EXT, framebuffer);
qglFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, attachment, renderbuffertarget, renderbuffer);
}