#include "framebuffer.h"
#include "hash.h"
#include "macros.h"
-#include "mipmap.h"
#include "renderbuffer.h"
#include "state.h"
#include "teximage.h"
#include "texobj.h"
-#include "texstore.h"
-#include "texstate.h"
/** Set this to 1 to help debug FBO incompleteness problems */
*
* \return one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX, GL_DEPTH_COMPONENT
* GL_DEPTH_STENCIL_EXT or zero if error.
+ *
+ * XXX in the future when we support red-only and red-green formats
+ * we'll also return GL_RED and GL_RG.
*/
GLenum
_mesa_base_fbo_format(GLcontext *ctx, GLenum internalFormat)
}
+/**
+ * Check if any of the attachments of the given framebuffer are textures
+ * (render to texture). Call ctx->Driver.RenderTexture() for such
+ * attachments.
+ */
static void
check_begin_texture_render(GLcontext *ctx, struct gl_framebuffer *fb)
{
GLuint i;
ASSERT(ctx->Driver.RenderTexture);
+
+ if (fb->Name == 0)
+ return; /* can't render to texture with winsys framebuffers */
+
for (i = 0; i < BUFFER_COUNT; i++) {
struct gl_renderbuffer_attachment *att = fb->Attachment + i;
struct gl_texture_object *texObj = att->Texture;
static void
check_end_texture_render(GLcontext *ctx, struct gl_framebuffer *fb)
{
+ if (fb->Name == 0)
+ return; /* can't render to texture with winsys framebuffers */
+
if (ctx->Driver.FinishRenderTexture) {
GLuint i;
for (i = 0; i < BUFFER_COUNT; i++) {
void GLAPIENTRY
_mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer)
{
- struct gl_framebuffer *newFb, *newFbread;
+ struct gl_framebuffer *newDrawFb, *newReadFb;
+ struct gl_framebuffer *oldDrawFb, *oldReadFb;
GLboolean bindReadBuf, bindDrawBuf;
GET_CURRENT_CONTEXT(ctx);
if (framebuffer) {
/* Binding a user-created framebuffer object */
- newFb = _mesa_lookup_framebuffer(ctx, framebuffer);
- if (newFb == &DummyFramebuffer) {
+ newDrawFb = _mesa_lookup_framebuffer(ctx, framebuffer);
+ if (newDrawFb == &DummyFramebuffer) {
/* ID was reserved, but no real framebuffer object made yet */
- newFb = NULL;
+ newDrawFb = NULL;
}
- else if (!newFb && ctx->Extensions.ARB_framebuffer_object) {
+ else if (!newDrawFb && ctx->Extensions.ARB_framebuffer_object) {
/* All FBO IDs must be Gen'd */
_mesa_error(ctx, GL_INVALID_OPERATION, "glBindFramebuffer(buffer)");
return;
}
- if (!newFb) {
+ if (!newDrawFb) {
/* create new framebuffer object */
- newFb = ctx->Driver.NewFramebuffer(ctx, framebuffer);
- if (!newFb) {
+ newDrawFb = ctx->Driver.NewFramebuffer(ctx, framebuffer);
+ if (!newDrawFb) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT");
return;
}
- _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newFb);
+ _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newDrawFb);
}
- newFbread = newFb;
+ newReadFb = newDrawFb;
}
else {
/* Binding the window system framebuffer (which was originally set
* with MakeCurrent).
*/
- newFb = ctx->WinSysDrawBuffer;
- newFbread = ctx->WinSysReadBuffer;
+ newDrawFb = ctx->WinSysDrawBuffer;
+ newReadFb = ctx->WinSysReadBuffer;
}
- ASSERT(newFb);
- ASSERT(newFb != &DummyFramebuffer);
+ ASSERT(newDrawFb);
+ ASSERT(newDrawFb != &DummyFramebuffer);
+
+ /* save pointers to current/old framebuffers */
+ oldDrawFb = ctx->DrawBuffer;
+ oldReadFb = ctx->ReadBuffer;
+
+ /* check if really changing bindings */
+ if (oldDrawFb == newDrawFb)
+ bindDrawBuf = GL_FALSE;
+ if (oldReadFb == newReadFb)
+ bindReadBuf = GL_FALSE;
/*
* OK, now bind the new Draw/Read framebuffers, if they're changing.
+ *
+ * We also check if we're beginning and/or ending render-to-texture.
+ * When a framebuffer with texture attachments is unbound, call
+ * ctx->Driver.FinishRenderTexture().
+ * When a framebuffer with texture attachments is bound, call
+ * ctx->Driver.RenderTexture().
+ *
+ * Note that if the ReadBuffer has texture attachments we don't consider
+ * that a render-to-texture case.
*/
if (bindReadBuf) {
- if (ctx->ReadBuffer == newFbread) {
- bindReadBuf = GL_FALSE; /* no change */
- }
- else {
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
- _mesa_reference_framebuffer(&ctx->ReadBuffer, newFbread);
- }
+ FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+ /* check if old readbuffer was render-to-texture */
+ check_end_texture_render(ctx, oldReadFb);
+
+ _mesa_reference_framebuffer(&ctx->ReadBuffer, newReadFb);
}
if (bindDrawBuf) {
- /* check if old FB had any texture attachments */
- if (ctx->DrawBuffer->Name != 0) {
- check_end_texture_render(ctx, ctx->DrawBuffer);
- }
+ FLUSH_VERTICES(ctx, _NEW_BUFFERS);
- if (ctx->DrawBuffer == newFb) {
- bindDrawBuf = GL_FALSE; /* no change */
- }
- else {
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
- _mesa_reference_framebuffer(&ctx->DrawBuffer, newFb);
- }
+ /* check if old read/draw buffers were render-to-texture */
+ if (!bindReadBuf)
+ check_end_texture_render(ctx, oldReadFb);
- if (newFb->Name != 0) {
- /* check if newly bound framebuffer has any texture attachments */
- check_begin_texture_render(ctx, newFb);
- }
+ if (oldDrawFb != oldReadFb)
+ check_end_texture_render(ctx, oldDrawFb);
+
+ /* check if newly bound framebuffer has any texture attachments */
+ check_begin_texture_render(ctx, newDrawFb);
+
+ _mesa_reference_framebuffer(&ctx->DrawBuffer, newDrawFb);
}
if ((bindDrawBuf || bindReadBuf) && ctx->Driver.BindFramebuffer) {
- ctx->Driver.BindFramebuffer(ctx, target, newFb, newFbread);
+ ctx->Driver.BindFramebuffer(ctx, target, newDrawFb, newReadFb);
}
}
ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]);
/* check if deleting currently bound framebuffer object */
- if (fb == ctx->DrawBuffer) {
- /* bind default */
- ASSERT(fb->RefCount >= 2);
- _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0);
+ if (ctx->Extensions.EXT_framebuffer_blit) {
+ /* separate draw/read binding points */
+ if (fb == ctx->DrawBuffer) {
+ /* bind default */
+ ASSERT(fb->RefCount >= 2);
+ _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0);
+ }
+ if (fb == ctx->ReadBuffer) {
+ /* bind default */
+ ASSERT(fb->RefCount >= 2);
+ _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0);
+ }
}
- if (fb == ctx->ReadBuffer) {
- /* bind default */
- ASSERT(fb->RefCount >= 2);
- _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0);
+ else {
+ /* only one binding point for read/draw buffers */
+ if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer) {
+ /* bind default */
+ ASSERT(fb->RefCount >= 2);
+ _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+ }
}
/* remove from hash table immediately, to free the ID */
void GLAPIENTRY
_mesa_GenerateMipmapEXT(GLenum target)
{
- struct gl_texture_unit *texUnit;
struct gl_texture_object *texObj;
GET_CURRENT_CONTEXT(ctx);
return;
}
- texUnit = _mesa_get_current_tex_unit(ctx);
- texObj = _mesa_select_tex_object(ctx, texUnit, target);
+ texObj = _mesa_get_current_tex_object(ctx, target);
+
+ if (texObj->BaseLevel >= texObj->MaxLevel) {
+ /* nothing to do */
+ return;
+ }
_mesa_lock_texture(ctx, texObj);
if (target == GL_TEXTURE_CUBE_MAP) {
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