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Init the Red/Green/Blue/Alpha/Depth/StencilBits fields in driNewRenderbuffer()

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This commit is contained in:
Brian Paul 2006-03-30 16:32:16 +00:00
parent 84c5d0a789
commit 94d6bf883b
1 changed files with 19 additions and 0 deletions
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19
src/mesa/drivers/dri/common/drirenderbuffer.c
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@ -40,6 +40,10 @@ driDeleteRenderbuffer(struct gl_renderbuffer *rb)
* Allocate a new driRenderbuffer object.
* Individual drivers are free to implement different versions of
* this function.
*
* At this time, this function can only be used for window-system
* renderbuffers, not user-created RBOs.
*
* \param format Either GL_RGBA, GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT24,
* GL_DEPTH_COMPONENT32, or GL_STENCIL_INDEX8_EXT (for now).
* \param addr address in main memory of the buffer. Probably a memory
@ -81,30 +85,45 @@ driNewRenderbuffer(GLenum format, GLvoid *addr,
/* Color */
drb->Base._BaseFormat = GL_RGBA;
drb->Base.DataType = GL_UNSIGNED_BYTE;
if (format == GL_RGB5) {
drb->Base.RedBits = 5;
drb->Base.GreenBits = 6;
drb->Base.BlueBits = 5;
}
else {
drb->Base.RedBits =
drb->Base.GreenBits =
drb->Base.BlueBits =
drb->Base.AlphaBits = 8;
}
}
else if (format == GL_DEPTH_COMPONENT16) {
/* Depth */
drb->Base._BaseFormat = GL_DEPTH_COMPONENT;
/* we always Get/Put 32-bit Z values */
drb->Base.DataType = GL_UNSIGNED_INT;
drb->Base.DepthBits = 16;
}
else if (format == GL_DEPTH_COMPONENT24) {
/* Depth */
drb->Base._BaseFormat = GL_DEPTH_COMPONENT;
/* we always Get/Put 32-bit Z values */
drb->Base.DataType = GL_UNSIGNED_INT;
drb->Base.DepthBits = 24;
}
else if (format == GL_DEPTH_COMPONENT32) {
/* Depth */
drb->Base._BaseFormat = GL_DEPTH_COMPONENT;
/* we always Get/Put 32-bit Z values */
drb->Base.DataType = GL_UNSIGNED_INT;
drb->Base.DepthBits = 32;
}
else {
/* Stencil */
ASSERT(format == GL_STENCIL_INDEX8_EXT);
drb->Base._BaseFormat = GL_STENCIL_INDEX;
drb->Base.DataType = GL_UNSIGNED_BYTE;
drb->Base.StencilBits = 8;
}
/* XXX if we were allocating a user-created renderbuffer, we'd have