#include "formats.h"
#include "macros.h"
#include "mtypes.h"
-#include "fbobject.h"
#include "framebuffer.h"
#include "renderbuffer.h"
#include "texobj.h"
}
-/**
- * Allocate a new gl_framebuffer object.
- * This is the default function for ctx->Driver.NewFramebuffer().
- * This is for allocating user-created framebuffers, not window-system
- * framebuffers!
- * \sa _mesa_create_framebuffer
- */
-struct gl_framebuffer *
-_mesa_new_framebuffer(struct gl_context *ctx, GLuint name)
-{
- struct gl_framebuffer *fb;
- (void) ctx;
- assert(name != 0);
- fb = CALLOC_STRUCT(gl_framebuffer);
- if (fb) {
- _mesa_initialize_user_framebuffer(fb, name);
- }
- return fb;
-}
-
-
/**
* Initialize a gl_framebuffer object. Typically used to initialize
* window system-created framebuffers, not user-created framebuffers.
}
fb->Delete = _mesa_destroy_framebuffer;
- fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
compute_depth_max(fb);
}
-/**
- * Initialize a user-created gl_framebuffer object.
- * \sa _mesa_initialize_window_framebuffer
- */
-void
-_mesa_initialize_user_framebuffer(struct gl_framebuffer *fb, GLuint name)
-{
- assert(fb);
- assert(name);
-
- memset(fb, 0, sizeof(struct gl_framebuffer));
-
- fb->Name = name;
- fb->RefCount = 1;
- fb->ColorDrawBuffer = GL_COLOR_ATTACHMENT0_EXT;
- fb->_ColorDrawBufferIndex = BUFFER_COLOR0;
- fb->ColorReadBuffer = GL_COLOR_ATTACHMENT0_EXT;
- fb->_ColorReadBufferIndex = BUFFER_COLOR0;
- fb->Delete = _mesa_destroy_framebuffer;
- _glthread_INIT_MUTEX(fb->Mutex);
-}
-
-
/**
* Deallocate buffer and everything attached to it.
* Typically called via the gl_framebuffer->Delete() method.
if (att->Renderbuffer) {
_mesa_reference_renderbuffer(&att->Renderbuffer, NULL);
}
- if (att->Texture) {
- _mesa_reference_texobj(&att->Texture, NULL);
- }
- ASSERT(!att->Renderbuffer);
- ASSERT(!att->Texture);
- att->Type = GL_NONE;
}
}
GLuint width, GLuint height)
{
GLuint i;
-
- /* XXX I think we could check if the size is not changing
- * and return early.
- */
-
- /* For window system framebuffers, Name is zero */
- assert(fb->Name == 0);
-
for (i = 0; i < BUFFER_COUNT; i++) {
struct gl_renderbuffer_attachment *att = &fb->Attachment[i];
- if (att->Type == GL_RENDERBUFFER_EXT && att->Renderbuffer) {
+ if (att->Renderbuffer) {
struct gl_renderbuffer *rb = att->Renderbuffer;
/* only resize if size is changing */
if (rb->Width != width || rb->Height != height) {
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 );
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 );
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
- * sizes, set the framebuffer's width and height to the min size.
- * Note: this is only intended for user-created framebuffers, not
- * window-system framebuffes.
- */
-static void
-update_framebuffer_size(struct gl_context *ctx, struct gl_framebuffer *fb)
-{
- GLuint minWidth = ~0, minHeight = ~0;
- GLuint i;
-
- /* user-created framebuffers only */
- assert(fb->Name);
-
- for (i = 0; i < BUFFER_COUNT; i++) {
- struct gl_renderbuffer_attachment *att = &fb->Attachment[i];
- const struct gl_renderbuffer *rb = att->Renderbuffer;
- if (rb) {
- minWidth = MIN2(minWidth, rb->Width);
- minHeight = MIN2(minHeight, rb->Height);
- }
- }
-
- if (minWidth != ~0) {
- fb->Width = minWidth;
- fb->Height = minHeight;
- }
- else {
- fb->Width = 0;
- fb->Height = 0;
- }
-}
-
-
/**
* 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
if (!buffer)
return;
- if (buffer->Name) {
- /* user-created framebuffer size depends on the renderbuffers */
- update_framebuffer_size(ctx, buffer);
- }
-
buffer->_Xmin = 0;
buffer->_Ymin = 0;
buffer->_Xmax = buffer->Width;
ASSERT(buffer->_Ymin <= buffer->_Ymax);
}
-
-/**
- * The glGet queries of the framebuffer red/green/blue size, stencil size,
- * etc. are satisfied by the fields of ctx->DrawBuffer->Visual. These can
- * change depending on the renderbuffer bindings. This function updates
- * the given framebuffer's Visual from the current renderbuffer bindings.
- *
- * This may apply to user-created framebuffers or window system framebuffers.
- *
- * Also note: ctx->DrawBuffer->Visual.depthBits might not equal
- * ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer.DepthBits.
- * The former one is used to convert floating point depth values into
- * integer Z values.
- */
-void
-_mesa_update_framebuffer_visual(struct gl_context *ctx,
- struct gl_framebuffer *fb)
-{
- GLuint i;
-
- memset(&fb->Visual, 0, sizeof(fb->Visual));
- fb->Visual.rgbMode = GL_TRUE; /* assume this */
-
-#if 0 /* this _might_ be needed */
- if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
- /* leave visual fields zero'd */
- return;
- }
-#endif
-
- /* find first RGB renderbuffer */
- for (i = 0; i < BUFFER_COUNT; i++) {
- 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;
-
- 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.blueBits = _mesa_get_format_bits(fmt, GL_BLUE_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;
- 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;
- const gl_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;
- 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;
- 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->Visual.accumBlueBits = _mesa_get_format_bits(fmt, GL_BLUE_BITS);
- fb->Visual.accumAlphaBits = _mesa_get_format_bits(fmt, GL_ALPHA_BITS);
- }
-
- compute_depth_max(fb);
-}
-
-
/*
* Example DrawBuffers scenarios:
*
static void
update_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
{
- if (fb->Name == 0) {
- /* 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).
- */
- _mesa_drawbuffer(ctx, ctx->Color.DrawBuffer, 0);
- }
- else {
- /* This is a user-created framebuffer.
- * Completeness only matters for user-created framebuffers.
- */
- if (fb->_Status != GL_FRAMEBUFFER_COMPLETE) {
- _mesa_test_framebuffer_completeness(ctx, fb);
- }
- }
+ _mesa_drawbuffer(ctx, ctx->Color.DrawBuffer, 0);
/* Strictly speaking, we don't need to update the draw-state
* if this FB is bound as ctx->ReadBuffer (and conversely, the
{
const struct gl_renderbuffer_attachment *att = fb->Attachment;
- /* If we don't know the framebuffer status, update it now */
- if (fb->_Status == 0) {
- _mesa_test_framebuffer_completeness(ctx, fb);
- }
-
- if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
- return GL_FALSE;
- }
-
switch (format) {
case GL_COLOR:
case GL_RED:
break;
case GL_DEPTH:
case GL_DEPTH_COMPONENT:
- if (att[BUFFER_DEPTH].Type == GL_NONE) {
+ if (att[BUFFER_DEPTH].Renderbuffer == NULL) {
return GL_FALSE;
}
break;
case GL_STENCIL:
case GL_STENCIL_INDEX:
- if (att[BUFFER_STENCIL].Type == GL_NONE) {
+ if (att[BUFFER_STENCIL].Renderbuffer == NULL) {
return GL_FALSE;
}
break;
}
-/**
- * Print framebuffer info to stderr, for debugging.
- */
-void
-_mesa_print_framebuffer(const struct gl_framebuffer *fb)
-{
- GLuint i;
-
- fprintf(stderr, "Mesa Framebuffer %u at %p\n", fb->Name, (void *) fb);
- fprintf(stderr, " Size: %u x %u Status: %s\n", fb->Width, fb->Height,
- _mesa_lookup_enum_by_nr(fb->_Status));
- fprintf(stderr, " Attachments:\n");
-
- 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);
- 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);
- fprintf(stderr, " Size: %u x %u x %u Format %s\n",
- texImage->Width, texImage->Height, texImage->Depth,
- _mesa_get_format_name(texImage->TexFormat));
- }
- else if (att->Type == GL_RENDERBUFFER) {
- fprintf(stderr, " %2d: Renderbuffer %u, complete %d\n",
- i, att->Renderbuffer->Name, att->Complete);
- fprintf(stderr, " Size: %u x %u Format %s\n",
- att->Renderbuffer->Width, att->Renderbuffer->Height,
- _mesa_get_format_name(att->Renderbuffer->Format));
- }
- else {
- fprintf(stderr, " %2d: none\n", i);
- }
- }
-}
projects / reactos.git / blobdiff