/*
* Mesa 3-D graphics library
- * Version: 7.1
*
* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
*/
if (_mesa_is_user_fbo(fb)) {
/* A user-created renderbuffer */
GLuint i;
- ASSERT(ctx->Extensions.EXT_framebuffer_object);
for (i = 0; i < ctx->Const.MaxColorAttachments; i++) {
mask |= (BUFFER_BIT_COLOR0 << i);
}
case GL_FRONT:
return BUFFER_BIT_FRONT_LEFT | BUFFER_BIT_FRONT_RIGHT;
case GL_BACK:
- if (_mesa_is_gles3(ctx)) {
+ if (_mesa_is_gles(ctx)) {
/* Page 181 (page 192 of the PDF) in section 4.2.1 of the OpenGL
* ES 3.0.1 specification says:
*
*
* Since there is no stereo rendering in ES 3.0, only return the
* LEFT bits. This also satisfies the "n must be 1" requirement.
+ *
+ * We also do this for GLES 1 and 2 because those APIs have no
+ * concept of selecting the front and back buffer anyway and it's
+ * convenient to be able to maintain the magic behaviour of
+ * GL_BACK in that case.
*/
if (ctx->DrawBuffer->Visual.doubleBufferMode)
return BUFFER_BIT_BACK_LEFT;
* \param buffer buffer token such as GL_LEFT or GL_FRONT_AND_BACK, etc.
*
* Note that the behaviour of this function depends on whether the
- * current ctx->DrawBuffer is a window-system framebuffer (Name=0) or
- * a user-created framebuffer object (Name!=0).
+ * current ctx->DrawBuffer is a window-system framebuffer or a user-created
+ * framebuffer object.
* In the former case, we update the per-context ctx->Color.DrawBuffer
* state var _and_ the FB's ColorDrawBuffer state.
* In the later case, we update the FB's ColorDrawBuffer state only.
{
GLbitfield destMask;
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* too complex... */
+
+ FLUSH_VERTICES(ctx, 0);
if (MESA_VERBOSE & VERBOSE_API) {
_mesa_debug(ctx, "glDrawBuffer %s\n", _mesa_lookup_enum_by_nr(buffer));
GLbitfield usedBufferMask, supportedMask;
GLbitfield destMask[MAX_DRAW_BUFFERS];
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+ FLUSH_VERTICES(ctx, 0);
/* Turns out n==0 is a valid input that should not produce an error.
* The remaining code below correctly handles the n==0 case.
return;
}
- /* From the OpenGL 3.0 specification, page 259:
+ /* From the OpenGL 4.0 specification, page 256:
* "For both the default framebuffer and framebuffer objects, the
* constants FRONT, BACK, LEFT, RIGHT, and FRONT_AND_BACK are not
* valid in the bufs array passed to DrawBuffers, and will result in
- * the error INVALID_OPERATION. This restriction is because these
+ * the error INVALID_ENUM. This restriction is because these
* constants may themselves refer to multiple buffers, as shown in
* table 4.4."
+ * Previous versions of the OpenGL specification say INVALID_OPERATION,
+ * but the Khronos conformance tests expect INVALID_ENUM.
*/
if (_mesa_bitcount(destMask[output]) > 1) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glDrawBuffersARB(buffer)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glDrawBuffersARB(buffer)");
return;
}
}
/*
- * If n==1, destMask[0] may have up to four bits set.
+ * destMask[0] may have up to four bits set
+ * (ex: glDrawBuffer(GL_FRONT_AND_BACK)).
* Otherwise, destMask[x] can only have one bit set.
*/
- if (n == 1) {
+ if (n > 0 && _mesa_bitcount(destMask[0]) > 1) {
GLuint count = 0, destMask0 = destMask[0];
while (destMask0) {
GLint bufIndex = ffs(destMask0) - 1;
void
_mesa_update_draw_buffers(struct gl_context *ctx)
{
- GLenum buffers[MAX_DRAW_BUFFERS];
- GLuint i;
-
/* should be a window system FBO */
assert(_mesa_is_winsys_fbo(ctx->DrawBuffer));
- for (i = 0; i < ctx->Const.MaxDrawBuffers; i++)
- buffers[i] = ctx->Color.DrawBuffer[i];
-
- _mesa_drawbuffers(ctx, ctx->Const.MaxDrawBuffers, buffers, NULL);
+ _mesa_drawbuffers(ctx, ctx->Const.MaxDrawBuffers,
+ ctx->Color.DrawBuffer, NULL);
}
GLbitfield supportedMask;
GLint srcBuffer;
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+ FLUSH_VERTICES(ctx, 0);
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glReadBuffer %s\n", _mesa_lookup_enum_by_nr(buffer));
/* OK, all error checking has been completed now */
_mesa_readbuffer(ctx, buffer, srcBuffer);
- ctx->NewState |= _NEW_BUFFERS;
/*
* Call device driver function.
projects / mesa.git / blobdiff