/*
* Mesa 3-D graphics library
- * Version: 7.2
*
* Copyright (C) 1999-2008 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.
*/
#include "glheader.h"
#include "imports.h"
+#include "blend.h"
#include "buffers.h"
#include "context.h"
-#include "depthstencil.h"
#include "enums.h"
#include "formats.h"
#include "macros.h"
#include "framebuffer.h"
#include "renderbuffer.h"
#include "texobj.h"
+#include "glformats.h"
fb->Delete = _mesa_destroy_framebuffer;
fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
+ fb->_AllColorBuffersFixedPoint = !visual->floatMode;
+ fb->_HasSNormOrFloatColorBuffer = visual->floatMode;
compute_depth_max(fb);
}
{
if (fb) {
_mesa_free_framebuffer_data(fb);
+ free(fb->Label);
free(fb);
}
}
ASSERT(!att->Texture);
att->Type = GL_NONE;
}
-
- /* unbind _Depth/_StencilBuffer to decr ref counts */
- _mesa_reference_renderbuffer(&fb->_DepthBuffer, NULL);
- _mesa_reference_renderbuffer(&fb->_StencilBuffer, NULL);
}
* and return early.
*/
- /* For window system framebuffers, Name is zero */
- assert(fb->Name == 0);
+ /* Can only resize win-sys framebuffer objects */
+ assert(_mesa_is_winsys_fbo(fb));
for (i = 0; i < BUFFER_COUNT; i++) {
struct gl_renderbuffer_attachment *att = &fb->Attachment[i];
}
}
- if (fb->_DepthBuffer) {
- struct gl_renderbuffer *rb = fb->_DepthBuffer;
- if (rb->Width != width || rb->Height != height) {
- if (!rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height)) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "Resizing framebuffer");
- }
- }
- }
-
- if (fb->_StencilBuffer) {
- struct gl_renderbuffer *rb = fb->_StencilBuffer;
- if (rb->Width != width || rb->Height != height) {
- if (!rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height)) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "Resizing framebuffer");
- }
- }
- }
-
fb->Width = width;
fb->Height = height;
}
}
-
-
-/**
- * XXX THIS IS OBSOLETE - drivers should take care of detecting window
- * size changes and act accordingly, likely calling _mesa_resize_framebuffer().
- *
- * GL_MESA_resize_buffers extension.
- *
- * When this function is called, we'll ask the window system how large
- * the current window is. If it's a new size, we'll call the driver's
- * ResizeBuffers function. The driver will then resize its color buffers
- * as needed, and maybe call the swrast's routine for reallocating
- * swrast-managed depth/stencil/accum/etc buffers.
- * \note This function should only be called through the GL API, not
- * from device drivers (as was done in the past).
- */
-void
-_mesa_resizebuffers( struct gl_context *ctx )
-{
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH( ctx );
-
- if (MESA_VERBOSE & VERBOSE_API)
- _mesa_debug(ctx, "glResizeBuffersMESA\n");
-
- if (!ctx->Driver.GetBufferSize) {
- return;
- }
-
- if (ctx->WinSysDrawBuffer) {
- GLuint newWidth, newHeight;
- struct gl_framebuffer *buffer = ctx->WinSysDrawBuffer;
-
- assert(buffer->Name == 0);
-
- /* ask device driver for size of output buffer */
- ctx->Driver.GetBufferSize( buffer, &newWidth, &newHeight );
-
- /* see if size of device driver's color buffer (window) has changed */
- if (buffer->Width != newWidth || buffer->Height != newHeight) {
- if (ctx->Driver.ResizeBuffers)
- ctx->Driver.ResizeBuffers(ctx, buffer, newWidth, newHeight );
- }
- }
-
- if (ctx->WinSysReadBuffer
- && ctx->WinSysReadBuffer != ctx->WinSysDrawBuffer) {
- GLuint newWidth, newHeight;
- struct gl_framebuffer *buffer = ctx->WinSysReadBuffer;
-
- assert(buffer->Name == 0);
-
- /* ask device driver for size of read buffer */
- ctx->Driver.GetBufferSize( buffer, &newWidth, &newHeight );
-
- /* see if size of device driver's color buffer (window) has changed */
- if (buffer->Width != newWidth || buffer->Height != newHeight) {
- if (ctx->Driver.ResizeBuffers)
- ctx->Driver.ResizeBuffers(ctx, buffer, newWidth, newHeight );
- }
- }
-
- ctx->NewState |= _NEW_BUFFERS; /* to update scissor / window bounds */
-}
-
-
-/*
- * XXX THIS IS OBSOLETE
- */
-void GLAPIENTRY
-_mesa_ResizeBuffersMESA( void )
-{
- GET_CURRENT_CONTEXT(ctx);
-
- if (ctx->Extensions.MESA_resize_buffers)
- _mesa_resizebuffers( ctx );
-}
-
-
-
/**
* Examine all the framebuffer's renderbuffers to update the Width/Height
* fields of the framebuffer. If we have renderbuffers with different
GLuint i;
/* user-created framebuffers only */
- assert(fb->Name);
+ assert(_mesa_is_user_fbo(fb));
for (i = 0; i < BUFFER_COUNT; i++) {
struct gl_renderbuffer_attachment *att = &fb->Attachment[i];
if (!buffer)
return;
- if (buffer->Name) {
+ if (_mesa_is_user_fbo(buffer)) {
/* user-created framebuffer size depends on the renderbuffers */
update_framebuffer_size(ctx, buffer);
}
const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
const gl_format fmt = rb->Format;
+ /* Grab samples and sampleBuffers from any attachment point (assuming
+ * the framebuffer is complete, we'll get the same answer from all
+ * attachments).
+ */
+ fb->Visual.samples = rb->NumSamples;
+ fb->Visual.sampleBuffers = rb->NumSamples > 0 ? 1 : 0;
+
if (_mesa_is_legal_color_format(ctx, baseFormat)) {
fb->Visual.redBits = _mesa_get_format_bits(fmt, GL_RED_BITS);
fb->Visual.greenBits = _mesa_get_format_bits(fmt, GL_GREEN_BITS);
fb->Visual.alphaBits = _mesa_get_format_bits(fmt, GL_ALPHA_BITS);
fb->Visual.rgbBits = fb->Visual.redBits
+ fb->Visual.greenBits + fb->Visual.blueBits;
- fb->Visual.samples = rb->NumSamples;
- fb->Visual.sampleBuffers = rb->NumSamples > 0 ? 1 : 0;
if (_mesa_get_format_color_encoding(fmt) == GL_SRGB)
- fb->Visual.sRGBCapable = ctx->Const.sRGBCapable;
+ fb->Visual.sRGBCapable = ctx->Extensions.EXT_framebuffer_sRGB;
break;
}
}
* _ColorDrawBuffers
* _NumColorDrawBuffers
* _ColorReadBuffer
- * _DepthBuffer
- * _StencilBuffer
*
* If the framebuffer is user-created, make sure it's complete.
*
static void
update_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
{
- if (fb->Name == 0) {
+ if (_mesa_is_winsys_fbo(fb)) {
/* This is a window-system framebuffer */
/* Need to update the FB's GL_DRAW_BUFFER state to match the
* context state (GL_READ_BUFFER too).
*/
update_color_draw_buffers(ctx, fb);
update_color_read_buffer(ctx, fb);
- _mesa_update_depth_buffer(ctx, fb);
- _mesa_update_stencil_buffer(ctx, fb);
compute_depth_max(fb);
}
update_framebuffer(ctx, drawFb);
if (readFb != drawFb)
update_framebuffer(ctx, readFb);
+
+ _mesa_update_clamp_vertex_color(ctx);
+ _mesa_update_clamp_fragment_color(ctx);
}
/**
* As above, but for drawing operations.
- * XXX could do some code merging w/ above function.
*/
GLboolean
_mesa_dest_buffer_exists(struct gl_context *ctx, GLenum format)
GLenum
_mesa_get_color_read_format(struct gl_context *ctx)
{
- switch (ctx->ReadBuffer->_ColorReadBuffer->Format) {
- case MESA_FORMAT_ARGB8888:
- return GL_BGRA;
- case MESA_FORMAT_RGB565:
- return GL_BGR;
- default:
- return GL_RGBA;
+ if (!ctx->ReadBuffer || !ctx->ReadBuffer->_ColorReadBuffer) {
+ /* The spec is unclear how to handle this case, but NVIDIA's
+ * driver generates GL_INVALID_OPERATION.
+ */
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_FORMAT: "
+ "no GL_READ_BUFFER)");
+ return GL_NONE;
+ }
+ else {
+ const GLenum format = ctx->ReadBuffer->_ColorReadBuffer->Format;
+ const GLenum data_type = _mesa_get_format_datatype(format);
+
+ if (format == MESA_FORMAT_ARGB8888)
+ return GL_BGRA;
+ else if (format == MESA_FORMAT_RGB565)
+ return GL_BGR;
+
+ switch (data_type) {
+ case GL_UNSIGNED_INT:
+ case GL_INT:
+ return GL_RGBA_INTEGER;
+ default:
+ return GL_RGBA;
+ }
}
}
GLenum
_mesa_get_color_read_type(struct gl_context *ctx)
{
- switch (ctx->ReadBuffer->_ColorReadBuffer->Format) {
- case MESA_FORMAT_ARGB8888:
- return GL_UNSIGNED_BYTE;
- case MESA_FORMAT_RGB565:
- return GL_UNSIGNED_SHORT_5_6_5_REV;
- default:
- return GL_UNSIGNED_BYTE;
+ if (!ctx->ReadBuffer || !ctx->ReadBuffer->_ColorReadBuffer) {
+ /* The spec is unclear how to handle this case, but NVIDIA's
+ * driver generates GL_INVALID_OPERATION.
+ */
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_TYPE: "
+ "no GL_READ_BUFFER)");
+ return GL_NONE;
+ }
+ else {
+ const GLenum format = ctx->ReadBuffer->_ColorReadBuffer->Format;
+ const GLenum data_type = _mesa_get_format_datatype(format);
+
+ if (format == MESA_FORMAT_RGB565)
+ return GL_UNSIGNED_SHORT_5_6_5_REV;
+
+ switch (data_type) {
+ case GL_SIGNED_NORMALIZED:
+ return GL_BYTE;
+ case GL_UNSIGNED_INT:
+ case GL_INT:
+ case GL_FLOAT:
+ return data_type;
+ case GL_UNSIGNED_NORMALIZED:
+ default:
+ return GL_UNSIGNED_BYTE;
+ }
+ }
+}
+
+
+/**
+ * Returns the read renderbuffer for the specified format.
+ */
+struct gl_renderbuffer *
+_mesa_get_read_renderbuffer_for_format(const struct gl_context *ctx,
+ GLenum format)
+{
+ const struct gl_framebuffer *rfb = ctx->ReadBuffer;
+
+ if (_mesa_is_color_format(format)) {
+ return rfb->Attachment[rfb->_ColorReadBufferIndex].Renderbuffer;
+ } else if (_mesa_is_depth_format(format) ||
+ _mesa_is_depthstencil_format(format)) {
+ return rfb->Attachment[BUFFER_DEPTH].Renderbuffer;
+ } else {
+ return rfb->Attachment[BUFFER_STENCIL].Renderbuffer;
}
}
for (i = 0; i < BUFFER_COUNT; i++) {
const struct gl_renderbuffer_attachment *att = &fb->Attachment[i];
if (att->Type == GL_TEXTURE) {
- const struct gl_texture_image *texImage =
- _mesa_get_attachment_teximage_const(att);
+ const struct gl_texture_image *texImage = att->Renderbuffer->TexImage;
fprintf(stderr,
" %2d: Texture %u, level %u, face %u, slice %u, complete %d\n",
i, att->Texture->Name, att->TextureLevel, att->CubeMapFace,
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