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mesa: add support for GL_DEPTH_STENCIL_ATTACHMENT point.

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Used to set both the depth and stencil attachment points to one renderbuffer
of texture.
This commit is contained in:
Brian Paul
2009-01-21 11:06:11 -07:00
parent 722d976283
commit 3059007f0c
1 changed files with 46 additions and 1 deletions
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47
src/mesa/main/fbobject.c
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@@ -128,6 +128,8 @@ _mesa_lookup_framebuffer(GLcontext *ctx, GLuint id)
/**
* Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
* gl_renderbuffer_attachment object.
* If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
* the depth buffer attachment point.
*/
struct gl_renderbuffer_attachment *
_mesa_get_attachment(GLcontext *ctx, struct gl_framebuffer *fb,
@@ -157,6 +159,8 @@ _mesa_get_attachment(GLcontext *ctx, struct gl_framebuffer *fb,
return NULL;
}
return &fb->Attachment[BUFFER_COLOR0 + i];
case GL_DEPTH_STENCIL_ATTACHMENT:
/* fall-through */
case GL_DEPTH_ATTACHMENT_EXT:
return &fb->Attachment[BUFFER_DEPTH];
case GL_STENCIL_ATTACHMENT_EXT:
@@ -267,6 +271,12 @@ _mesa_framebuffer_renderbuffer(GLcontext *ctx, struct gl_framebuffer *fb,
ASSERT(att);
if (rb) {
_mesa_set_renderbuffer_attachment(ctx, att, rb);
if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
/* do stencil attachment here (depth already done above) */
att = _mesa_get_attachment(ctx, fb, GL_STENCIL_ATTACHMENT_EXT);
assert(att);
_mesa_set_renderbuffer_attachment(ctx, att, rb);
}
}
else {
_mesa_remove_attachment(ctx, att);
@@ -1361,7 +1371,6 @@ framebuffer_texture(GLcontext *ctx, const char *caller, GLenum target,
}
}
if ((level < 0) ||
(level >= _mesa_max_texture_levels(ctx, texObj->Target))) {
_mesa_error(ctx, GL_INVALID_VALUE,
@@ -1377,6 +1386,18 @@ framebuffer_texture(GLcontext *ctx, const char *caller, GLenum target,
return;
}
if (texObj && attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
/* the texture format must be depth+stencil */
const struct gl_texture_image *texImg;
texImg = texObj->Image[0][texObj->BaseLevel];
if (!texImg || texImg->_BaseFormat != GL_DEPTH_STENCIL) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glFramebufferTexture%sEXT(texture is not"
" DEPTH_STENCIL format)", caller);
return;
}
}
FLUSH_VERTICES(ctx, _NEW_BUFFERS);
/* The above doesn't fully flush the drivers in the way that a
* glFlush does, but that is required here:
@@ -1535,6 +1556,17 @@ _mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment,
rb = NULL;
}
if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
/* make sure the renderbuffer is a depth/stencil format */
if (rb->_BaseFormat != GL_DEPTH_STENCIL) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glFramebufferRenderbufferEXT(renderbuffer"
" is not DEPTH_STENCIL format)");
return;
}
}
FLUSH_VERTICES(ctx, _NEW_BUFFERS);
/* The above doesn't fully flush the drivers in the way that a
* glFlush does, but that is required here:
@@ -1603,6 +1635,19 @@ _mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment,
return;
}
if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
/* the depth and stencil attachments must point to the same buffer */
const struct gl_renderbuffer_attachment *depthAtt, *stencilAtt;
depthAtt = _mesa_get_attachment(ctx, buffer, GL_DEPTH_ATTACHMENT);
stencilAtt = _mesa_get_attachment(ctx, buffer, GL_STENCIL_ATTACHMENT);
if (depthAtt->Renderbuffer != stencilAtt->Renderbuffer) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
" attachments differ)");
return;
}
}
FLUSH_VERTICES(ctx, _NEW_BUFFERS);
/* The above doesn't fully flush the drivers in the way that a
* glFlush does, but that is required here: