/*
* 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.
*/
* ushorts, uints, etc.
*/
-
+#include <stdio.h>
#include "glheader.h"
#include "imports.h"
+#include "blend.h"
#include "buffers.h"
#include "context.h"
#include "enums.h"
#include "framebuffer.h"
#include "renderbuffer.h"
#include "texobj.h"
+#include "glformats.h"
memset(fb, 0, sizeof(struct gl_framebuffer));
- _glthread_INIT_MUTEX(fb->Mutex);
+ mtx_init(&fb->Mutex, mtx_plain);
fb->RefCount = 1;
fb->Delete = _mesa_destroy_framebuffer;
fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
+ fb->_AllColorBuffersFixedPoint = !visual->floatMode;
+ fb->_HasSNormOrFloatColorBuffer = visual->floatMode;
compute_depth_max(fb);
}
fb->ColorReadBuffer = GL_COLOR_ATTACHMENT0_EXT;
fb->_ColorReadBufferIndex = BUFFER_COLOR0;
fb->Delete = _mesa_destroy_framebuffer;
- _glthread_INIT_MUTEX(fb->Mutex);
+ mtx_init(&fb->Mutex, mtx_plain);
}
{
if (fb) {
_mesa_free_framebuffer_data(fb);
+ free(fb->Label);
free(fb);
}
}
assert(fb);
assert(fb->RefCount == 0);
- _glthread_DESTROY_MUTEX(fb->Mutex);
+ mtx_destroy(&fb->Mutex);
for (i = 0; i < BUFFER_COUNT; i++) {
struct gl_renderbuffer_attachment *att = &fb->Attachment[i];
if (att->Texture) {
_mesa_reference_texobj(&att->Texture, NULL);
}
- ASSERT(!att->Renderbuffer);
- ASSERT(!att->Texture);
+ assert(!att->Renderbuffer);
+ assert(!att->Texture);
att->Type = GL_NONE;
}
}
GLboolean deleteFlag = GL_FALSE;
struct gl_framebuffer *oldFb = *ptr;
- _glthread_LOCK_MUTEX(oldFb->Mutex);
- ASSERT(oldFb->RefCount > 0);
+ mtx_lock(&oldFb->Mutex);
+ assert(oldFb->RefCount > 0);
oldFb->RefCount--;
deleteFlag = (oldFb->RefCount == 0);
- _glthread_UNLOCK_MUTEX(oldFb->Mutex);
+ mtx_unlock(&oldFb->Mutex);
if (deleteFlag)
oldFb->Delete(oldFb);
assert(!*ptr);
if (fb) {
- _glthread_LOCK_MUTEX(fb->Mutex);
+ mtx_lock(&fb->Mutex);
fb->RefCount++;
- _glthread_UNLOCK_MUTEX(fb->Mutex);
+ mtx_unlock(&fb->Mutex);
*ptr = fb;
}
}
/* only resize if size is changing */
if (rb->Width != width || rb->Height != height) {
if (rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height)) {
- ASSERT(rb->Width == width);
- ASSERT(rb->Height == height);
+ assert(rb->Width == width);
+ assert(rb->Height == height);
}
else {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "Resizing framebuffer");
}
}
-
-
-/**
- * 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
}
}
- if (minWidth != ~0) {
+ if (minWidth != ~0U) {
fb->Width = minWidth;
fb->Height = minHeight;
}
}
+/**
+ * Calculate the inclusive bounding box for the scissor of a specific viewport
+ *
+ * \param ctx GL context.
+ * \param buffer Framebuffer to be checked against
+ * \param idx Index of the desired viewport
+ * \param bbox Bounding box for the scissored viewport. Stored as xmin,
+ * xmax, ymin, ymax.
+ *
+ * \warning This function assumes that the framebuffer dimensions are up to
+ * date (e.g., update_framebuffer_size has been recently called on \c buffer).
+ *
+ * \sa _mesa_clip_to_region
+ */
+void
+_mesa_scissor_bounding_box(const struct gl_context *ctx,
+ const struct gl_framebuffer *buffer,
+ unsigned idx, int *bbox)
+{
+ bbox[0] = 0;
+ bbox[2] = 0;
+ bbox[1] = buffer->Width;
+ bbox[3] = buffer->Height;
+
+ if (ctx->Scissor.EnableFlags & (1u << idx)) {
+ if (ctx->Scissor.ScissorArray[idx].X > bbox[0]) {
+ bbox[0] = ctx->Scissor.ScissorArray[idx].X;
+ }
+ if (ctx->Scissor.ScissorArray[idx].Y > bbox[2]) {
+ bbox[2] = ctx->Scissor.ScissorArray[idx].Y;
+ }
+ if (ctx->Scissor.ScissorArray[idx].X + ctx->Scissor.ScissorArray[idx].Width < bbox[1]) {
+ bbox[1] = ctx->Scissor.ScissorArray[idx].X + ctx->Scissor.ScissorArray[idx].Width;
+ }
+ if (ctx->Scissor.ScissorArray[idx].Y + ctx->Scissor.ScissorArray[idx].Height < bbox[3]) {
+ bbox[3] = ctx->Scissor.ScissorArray[idx].Y + ctx->Scissor.ScissorArray[idx].Height;
+ }
+ /* finally, check for empty region */
+ if (bbox[0] > bbox[1]) {
+ bbox[0] = bbox[1];
+ }
+ if (bbox[2] > bbox[3]) {
+ bbox[2] = bbox[3];
+ }
+ }
+
+ assert(bbox[0] <= bbox[1]);
+ assert(bbox[2] <= bbox[3]);
+}
+
/**
* Update the context's current drawing buffer's Xmin, Xmax, Ymin, Ymax fields.
* These values are computed from the buffer's width and height and
_mesa_update_draw_buffer_bounds(struct gl_context *ctx)
{
struct gl_framebuffer *buffer = ctx->DrawBuffer;
+ int bbox[4];
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);
}
- buffer->_Xmin = 0;
- buffer->_Ymin = 0;
- buffer->_Xmax = buffer->Width;
- buffer->_Ymax = buffer->Height;
-
- if (ctx->Scissor.Enabled) {
- if (ctx->Scissor.X > buffer->_Xmin) {
- buffer->_Xmin = ctx->Scissor.X;
- }
- if (ctx->Scissor.Y > buffer->_Ymin) {
- buffer->_Ymin = ctx->Scissor.Y;
- }
- if (ctx->Scissor.X + ctx->Scissor.Width < buffer->_Xmax) {
- buffer->_Xmax = ctx->Scissor.X + ctx->Scissor.Width;
- }
- if (ctx->Scissor.Y + ctx->Scissor.Height < buffer->_Ymax) {
- buffer->_Ymax = ctx->Scissor.Y + ctx->Scissor.Height;
- }
- /* finally, check for empty region */
- if (buffer->_Xmin > buffer->_Xmax) {
- buffer->_Xmin = buffer->_Xmax;
- }
- if (buffer->_Ymin > buffer->_Ymax) {
- buffer->_Ymin = buffer->_Ymax;
- }
- }
-
- ASSERT(buffer->_Xmin <= buffer->_Xmax);
- ASSERT(buffer->_Ymin <= buffer->_Ymax);
+ /* Default to the first scissor as that's always valid */
+ _mesa_scissor_bounding_box(ctx, buffer, 0, bbox);
+ buffer->_Xmin = bbox[0];
+ buffer->_Ymin = bbox[2];
+ buffer->_Xmax = bbox[1];
+ buffer->_Ymax = bbox[3];
}
if (fb->Attachment[i].Renderbuffer) {
const struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer;
const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
- const gl_format fmt = rb->Format;
+ const mesa_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
for (i = 0; i < BUFFER_COUNT; i++) {
if (fb->Attachment[i].Renderbuffer) {
const struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer;
- const gl_format fmt = rb->Format;
+ const mesa_format fmt = rb->Format;
if (_mesa_get_format_datatype(fmt) == GL_FLOAT) {
fb->Visual.floatMode = GL_TRUE;
if (fb->Attachment[BUFFER_DEPTH].Renderbuffer) {
const struct gl_renderbuffer *rb =
fb->Attachment[BUFFER_DEPTH].Renderbuffer;
- const gl_format fmt = rb->Format;
+ const mesa_format fmt = rb->Format;
fb->Visual.haveDepthBuffer = GL_TRUE;
fb->Visual.depthBits = _mesa_get_format_bits(fmt, GL_DEPTH_BITS);
}
if (fb->Attachment[BUFFER_STENCIL].Renderbuffer) {
const struct gl_renderbuffer *rb =
fb->Attachment[BUFFER_STENCIL].Renderbuffer;
- const gl_format fmt = rb->Format;
+ const mesa_format fmt = rb->Format;
fb->Visual.haveStencilBuffer = GL_TRUE;
fb->Visual.stencilBits = _mesa_get_format_bits(fmt, GL_STENCIL_BITS);
}
if (fb->Attachment[BUFFER_ACCUM].Renderbuffer) {
const struct gl_renderbuffer *rb =
fb->Attachment[BUFFER_ACCUM].Renderbuffer;
- const gl_format fmt = rb->Format;
+ const mesa_format fmt = rb->Format;
fb->Visual.haveAccumBuffer = GL_TRUE;
fb->Visual.accumRedBits = _mesa_get_format_bits(fmt, GL_RED_BITS);
fb->Visual.accumGreenBits = _mesa_get_format_bits(fmt, GL_GREEN_BITS);
fb->_ColorReadBuffer = NULL; /* legal! */
}
else {
- ASSERT(fb->_ColorReadBufferIndex >= 0);
- ASSERT(fb->_ColorReadBufferIndex < BUFFER_COUNT);
+ assert(fb->_ColorReadBufferIndex >= 0);
+ assert(fb->_ColorReadBufferIndex < BUFFER_COUNT);
fb->_ColorReadBuffer
= fb->Attachment[fb->_ColorReadBufferIndex].Renderbuffer;
}
update_framebuffer(ctx, drawFb);
if (readFb != drawFb)
update_framebuffer(ctx, readFb);
+
+ _mesa_update_clamp_vertex_color(ctx);
+ _mesa_update_clamp_fragment_color(ctx);
}
if (!readBuf) {
return GL_FALSE;
}
- ASSERT(_mesa_get_format_bits(readBuf->Format, GL_RED_BITS) > 0 ||
+ assert(_mesa_get_format_bits(readBuf->Format, GL_RED_BITS) > 0 ||
_mesa_get_format_bits(readBuf->Format, GL_ALPHA_BITS) > 0 ||
_mesa_get_format_bits(readBuf->Format, GL_TEXTURE_LUMINANCE_SIZE) > 0 ||
_mesa_get_format_bits(readBuf->Format, GL_TEXTURE_INTENSITY_SIZE) > 0 ||
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_B8G8R8A8_UNORM)
+ return GL_BGRA;
+ else if (format == MESA_FORMAT_B5G6R5_UNORM)
+ 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_B5G6R5_UNORM)
+ 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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