#include "imports.h"
#include "buffers.h"
#include "context.h"
-#include "depthstencil.h"
#include "enums.h"
#include "formats.h"
#include "macros.h"
/**
* Set *ptr to point to fb, with refcounting and locking.
+ * This is normally only called from the _mesa_reference_framebuffer() macro
+ * when there's a real pointer change.
*/
void
-_mesa_reference_framebuffer(struct gl_framebuffer **ptr,
- struct gl_framebuffer *fb)
+_mesa_reference_framebuffer_(struct gl_framebuffer **ptr,
+ struct gl_framebuffer *fb)
{
- assert(ptr);
- if (*ptr == fb) {
- /* no change */
- return;
- }
-
if (*ptr) {
/* unreference old renderbuffer */
GLboolean deleteFlag = GL_FALSE;
}
}
- 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;
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.floatMode = GL_FALSE;
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;
break;
}
}
+ fb->Visual.floatMode = GL_FALSE;
+ 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;
+
+ if (_mesa_get_format_datatype(fmt) == GL_FLOAT) {
+ fb->Visual.floatMode = GL_TRUE;
+ break;
+ }
+ }
+ }
+
if (fb->Attachment[BUFFER_DEPTH].Renderbuffer) {
const struct gl_renderbuffer *rb =
fb->Attachment[BUFFER_DEPTH].Renderbuffer;
}
-/**
- * Update the framebuffer's _DepthBuffer field using the renderbuffer
- * found at the given attachment index.
- *
- * If that attachment points to a combined GL_DEPTH_STENCIL renderbuffer,
- * create and install a depth wrapper/adaptor.
- *
- * \param fb the framebuffer whose _DepthBuffer field to update
- * \param attIndex indicates the renderbuffer to possibly wrap
- */
-void
-_mesa_update_depth_buffer(struct gl_context *ctx,
- struct gl_framebuffer *fb,
- GLuint attIndex)
-{
- struct gl_renderbuffer *depthRb;
-
- /* only one possiblity for now */
- ASSERT(attIndex == BUFFER_DEPTH);
-
- depthRb = fb->Attachment[attIndex].Renderbuffer;
-
- if (depthRb && _mesa_is_format_packed_depth_stencil(depthRb->Format)) {
- /* The attached depth buffer is a GL_DEPTH_STENCIL renderbuffer */
- if (!fb->_DepthBuffer
- || fb->_DepthBuffer->Wrapped != depthRb
- || _mesa_get_format_base_format(fb->_DepthBuffer->Format) != GL_DEPTH_COMPONENT) {
- /* need to update wrapper */
- struct gl_renderbuffer *wrapper
- = _mesa_new_z24_renderbuffer_wrapper(ctx, depthRb);
- _mesa_reference_renderbuffer(&fb->_DepthBuffer, wrapper);
- ASSERT(fb->_DepthBuffer->Wrapped == depthRb);
- }
- }
- else {
- /* depthRb may be null */
- _mesa_reference_renderbuffer(&fb->_DepthBuffer, depthRb);
- }
-}
-
-
-/**
- * Update the framebuffer's _StencilBuffer field using the renderbuffer
- * found at the given attachment index.
- *
- * If that attachment points to a combined GL_DEPTH_STENCIL renderbuffer,
- * create and install a stencil wrapper/adaptor.
- *
- * \param fb the framebuffer whose _StencilBuffer field to update
- * \param attIndex indicates the renderbuffer to possibly wrap
- */
-void
-_mesa_update_stencil_buffer(struct gl_context *ctx,
- struct gl_framebuffer *fb,
- GLuint attIndex)
-{
- struct gl_renderbuffer *stencilRb;
-
- ASSERT(attIndex == BUFFER_DEPTH ||
- attIndex == BUFFER_STENCIL);
-
- stencilRb = fb->Attachment[attIndex].Renderbuffer;
-
- if (stencilRb && _mesa_is_format_packed_depth_stencil(stencilRb->Format)) {
- /* The attached stencil buffer is a GL_DEPTH_STENCIL renderbuffer */
- if (!fb->_StencilBuffer
- || fb->_StencilBuffer->Wrapped != stencilRb
- || _mesa_get_format_base_format(fb->_StencilBuffer->Format) != GL_STENCIL_INDEX) {
- /* need to update wrapper */
- struct gl_renderbuffer *wrapper
- = _mesa_new_s8_renderbuffer_wrapper(ctx, stencilRb);
- _mesa_reference_renderbuffer(&fb->_StencilBuffer, wrapper);
- ASSERT(fb->_StencilBuffer->Wrapped == stencilRb);
- }
- }
- else {
- /* stencilRb may be null */
- _mesa_reference_renderbuffer(&fb->_StencilBuffer, stencilRb);
- }
-}
-
-
/*
* Example DrawBuffers scenarios:
*
*/
update_color_draw_buffers(ctx, fb);
update_color_read_buffer(ctx, fb);
- _mesa_update_depth_buffer(ctx, fb, BUFFER_DEPTH);
- _mesa_update_stencil_buffer(ctx, fb, BUFFER_STENCIL);
compute_depth_max(fb);
}
/**
- * Check if the renderbuffer for a read operation (glReadPixels, glCopyPixels,
- * glCopyTex[Sub]Image, etc) exists.
+ * Check if the renderbuffer for a read/draw operation exists.
* \param format a basic image format such as GL_RGB, GL_RGBA, GL_ALPHA,
* GL_DEPTH_COMPONENT, etc. or GL_COLOR, GL_DEPTH, GL_STENCIL.
+ * \param reading if TRUE, we're going to read from the buffer,
+ if FALSE, we're going to write to the buffer.
* \return GL_TRUE if buffer exists, GL_FALSE otherwise
*/
-GLboolean
-_mesa_source_buffer_exists(struct gl_context *ctx, GLenum format)
+static GLboolean
+renderbuffer_exists(struct gl_context *ctx,
+ struct gl_framebuffer *fb,
+ GLenum format,
+ GLboolean reading)
{
- const struct gl_renderbuffer_attachment *att = ctx->ReadBuffer->Attachment;
+ const struct gl_renderbuffer_attachment *att = fb->Attachment;
/* If we don't know the framebuffer status, update it now */
- if (ctx->ReadBuffer->_Status == 0) {
- _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer);
+ if (fb->_Status == 0) {
+ _mesa_test_framebuffer_completeness(ctx, fb);
}
- if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+ if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
return GL_FALSE;
}
case GL_RGBA:
case GL_BGRA:
case GL_ABGR_EXT:
- case GL_COLOR_INDEX:
case GL_RED_INTEGER_EXT:
+ case GL_RG_INTEGER:
case GL_GREEN_INTEGER_EXT:
case GL_BLUE_INTEGER_EXT:
case GL_ALPHA_INTEGER_EXT:
case GL_BGRA_INTEGER_EXT:
case GL_LUMINANCE_INTEGER_EXT:
case GL_LUMINANCE_ALPHA_INTEGER_EXT:
- if (ctx->ReadBuffer->_ColorReadBuffer == NULL) {
- return GL_FALSE;
+ if (reading) {
+ /* about to read from a color buffer */
+ const struct gl_renderbuffer *readBuf = fb->_ColorReadBuffer;
+ if (!readBuf) {
+ return GL_FALSE;
+ }
+ 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 ||
+ _mesa_get_format_bits(readBuf->Format, GL_INDEX_BITS) > 0);
+ }
+ else {
+ /* about to draw to zero or more color buffers (none is OK) */
+ return GL_TRUE;
}
- ASSERT(_mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_RED_BITS) > 0 ||
- _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_ALPHA_BITS) > 0 ||
- _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_INDEX_BITS) > 0);
break;
case GL_DEPTH:
case GL_DEPTH_COMPONENT:
- if (!att[BUFFER_DEPTH].Renderbuffer) {
+ if (att[BUFFER_DEPTH].Type == GL_NONE) {
return GL_FALSE;
}
- /*ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);*/
break;
case GL_STENCIL:
case GL_STENCIL_INDEX:
- if (!att[BUFFER_STENCIL].Renderbuffer) {
+ if (att[BUFFER_STENCIL].Type == GL_NONE) {
return GL_FALSE;
}
- /*ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);*/
break;
case GL_DEPTH_STENCIL_EXT:
- if (!att[BUFFER_DEPTH].Renderbuffer ||
- !att[BUFFER_STENCIL].Renderbuffer) {
+ if (att[BUFFER_DEPTH].Type == GL_NONE ||
+ att[BUFFER_STENCIL].Type == GL_NONE) {
return GL_FALSE;
}
- /*
- ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);
- ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);
- */
break;
default:
_mesa_problem(ctx,
- "Unexpected format 0x%x in _mesa_source_buffer_exists",
+ "Unexpected format 0x%x in renderbuffer_exists",
format);
return GL_FALSE;
}
}
+/**
+ * Check if the renderbuffer for a read operation (glReadPixels, glCopyPixels,
+ * glCopyTex[Sub]Image, etc) exists.
+ * \param format a basic image format such as GL_RGB, GL_RGBA, GL_ALPHA,
+ * GL_DEPTH_COMPONENT, etc. or GL_COLOR, GL_DEPTH, GL_STENCIL.
+ * \return GL_TRUE if buffer exists, GL_FALSE otherwise
+ */
+GLboolean
+_mesa_source_buffer_exists(struct gl_context *ctx, GLenum format)
+{
+ return renderbuffer_exists(ctx, ctx->ReadBuffer, format, GL_TRUE);
+}
+
+
/**
* 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)
{
- const struct gl_renderbuffer_attachment *att = ctx->DrawBuffer->Attachment;
-
- /* If we don't know the framebuffer status, update it now */
- if (ctx->DrawBuffer->_Status == 0) {
- _mesa_test_framebuffer_completeness(ctx, ctx->DrawBuffer);
- }
-
- if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
- return GL_FALSE;
- }
-
- switch (format) {
- case GL_COLOR:
- case GL_RED:
- case GL_GREEN:
- case GL_BLUE:
- case GL_ALPHA:
- case GL_LUMINANCE:
- case GL_LUMINANCE_ALPHA:
- case GL_INTENSITY:
- case GL_RGB:
- case GL_BGR:
- case GL_RGBA:
- case GL_BGRA:
- case GL_ABGR_EXT:
- case GL_COLOR_INDEX:
- case GL_RED_INTEGER_EXT:
- case GL_GREEN_INTEGER_EXT:
- case GL_BLUE_INTEGER_EXT:
- case GL_ALPHA_INTEGER_EXT:
- case GL_RGB_INTEGER_EXT:
- case GL_RGBA_INTEGER_EXT:
- case GL_BGR_INTEGER_EXT:
- case GL_BGRA_INTEGER_EXT:
- case GL_LUMINANCE_INTEGER_EXT:
- case GL_LUMINANCE_ALPHA_INTEGER_EXT:
- /* Nothing special since GL_DRAW_BUFFER could be GL_NONE. */
- /* Could assert that colorbuffer has RedBits > 0 */
- break;
- case GL_DEPTH:
- case GL_DEPTH_COMPONENT:
- if (!att[BUFFER_DEPTH].Renderbuffer) {
- return GL_FALSE;
- }
- /*ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);*/
- break;
- case GL_STENCIL:
- case GL_STENCIL_INDEX:
- if (!att[BUFFER_STENCIL].Renderbuffer) {
- return GL_FALSE;
- }
- /*ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);*/
- break;
- case GL_DEPTH_STENCIL_EXT:
- if (!att[BUFFER_DEPTH].Renderbuffer ||
- !att[BUFFER_STENCIL].Renderbuffer) {
- return GL_FALSE;
- }
- /*
- ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);
- ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);
- */
- break;
- default:
- _mesa_problem(ctx,
- "Unexpected format 0x%x in _mesa_dest_buffer_exists",
- format);
- return GL_FALSE;
- }
-
- /* OK */
- return GL_TRUE;
+ return renderbuffer_exists(ctx, ctx->DrawBuffer, format, GL_FALSE);
}
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;
+ const struct gl_texture_image *texImage =
+ _mesa_get_attachment_teximage_const(att);
fprintf(stderr,
" %2d: Texture %u, level %u, face %u, slice %u, complete %d\n",
i, att->Texture->Name, att->TextureLevel, att->CubeMapFace,
att->Zoffset, att->Complete);
- texImage = att->Texture->Image[att->CubeMapFace][att->TextureLevel];
fprintf(stderr, " Size: %u x %u x %u Format %s\n",
texImage->Width, texImage->Height, texImage->Depth,
_mesa_get_format_name(texImage->TexFormat));
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