xserver libX11 libxcb mesa git update 6 Apr 2011

1 files changed, 664 insertions, 665 deletions

diff --git a/mesalib/src/mesa/state_tracker/st_cb_fbo.c b/mesalib/src/mesa/state_tracker/st_cb_fbo.c
index 7ffee901c..0fc743a87 100644
--- a/mesalib/src/mesa/state_tracker/st_cb_fbo.c
+++ b/mesalib/src/mesa/state_tracker/st_cb_fbo.c
@@ -1,665 +1,664 @@
-/**************************************************************************
- * 
- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
- * All Rights Reserved.
- * 
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- * 
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- * 
- * 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 NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
- * 
- **************************************************************************/
-
-
-/**
- * Framebuffer/renderbuffer functions.
- *
- * \author Brian Paul
- */
-
-
-#include "main/imports.h"
-#include "main/context.h"
-#include "main/fbobject.h"
-#include "main/framebuffer.h"
-#include "main/macros.h"
-#include "main/mfeatures.h"
-#include "main/renderbuffer.h"
-
-#include "pipe/p_context.h"
-#include "pipe/p_defines.h"
-#include "pipe/p_screen.h"
-#include "st_context.h"
-#include "st_cb_fbo.h"
-#include "st_cb_flush.h"
-#include "st_format.h"
-#include "st_texture.h"
-#include "st_manager.h"
-
-#include "util/u_format.h"
-#include "util/u_inlines.h"
-#include "util/u_surface.h"
-
-
-/**
- * gl_renderbuffer::AllocStorage()
- * This is called to allocate the original drawing surface, and
- * during window resize.
- */
-static GLboolean
-st_renderbuffer_alloc_storage(struct gl_context * ctx,
-                              struct gl_renderbuffer *rb,
-                              GLenum internalFormat,
-                              GLuint width, GLuint height)
-{
-   struct st_context *st = st_context(ctx);
-   struct pipe_context *pipe = st->pipe;
-   struct pipe_screen *screen = st->pipe->screen;
-   struct st_renderbuffer *strb = st_renderbuffer(rb);
-   enum pipe_format format;
-   struct pipe_surface surf_tmpl;
-
-   if (strb->format != PIPE_FORMAT_NONE)
-      format = strb->format;
-   else
-      format = st_choose_renderbuffer_format(screen, internalFormat,
-                                             rb->NumSamples);
-
-   if (format == PIPE_FORMAT_NONE) {
-      return FALSE;
-   }
-
-   /* init renderbuffer fields */
-   strb->Base.Width  = width;
-   strb->Base.Height = height;
-   strb->Base.Format = st_pipe_format_to_mesa_format(format);
-   strb->Base._BaseFormat = _mesa_base_fbo_format(ctx, internalFormat);
-   strb->Base.DataType = st_format_datatype(format);
-
-   strb->defined = GL_FALSE;  /* undefined contents now */
-
-   if (strb->software) {
-      size_t size;
-      
-      free(strb->data);
-
-      assert(strb->format != PIPE_FORMAT_NONE);
-      
-      strb->stride = util_format_get_stride(strb->format, width);
-      size = util_format_get_2d_size(strb->format, strb->stride, height);
-      
-      strb->data = malloc(size);
-      
-      return strb->data != NULL;
-   }
-   else {
-      struct pipe_resource template;
-    
-      /* Free the old surface and texture
-       */
-      pipe_surface_reference( &strb->surface, NULL );
-      pipe_resource_reference( &strb->texture, NULL );
-      pipe_sampler_view_reference(&strb->sampler_view, NULL);
-
-      /* Setup new texture template.
-       */
-      memset(&template, 0, sizeof(template));
-      template.target = st->internal_target;
-      template.format = format;
-      template.width0 = width;
-      template.height0 = height;
-      template.depth0 = 1;
-      template.array_size = 1;
-      template.last_level = 0;
-      template.nr_samples = rb->NumSamples;
-      if (util_format_is_depth_or_stencil(format)) {
-         template.bind = PIPE_BIND_DEPTH_STENCIL;
-      }
-      else {
-         template.bind = (PIPE_BIND_DISPLAY_TARGET |
-                          PIPE_BIND_RENDER_TARGET);
-      }
-
-      strb->texture = screen->resource_create(screen, &template);
-
-      if (!strb->texture) 
-         return FALSE;
-
-      memset(&surf_tmpl, 0, sizeof(surf_tmpl));
-      u_surface_default_template(&surf_tmpl, strb->texture, template.bind);
-      strb->surface = pipe->create_surface(pipe,
-                                           strb->texture,
-                                           &surf_tmpl);
-      if (strb->surface) {
-         assert(strb->surface->texture);
-         assert(strb->surface->format);
-         assert(strb->surface->width == width);
-         assert(strb->surface->height == height);
-      }
-
-      return strb->surface != NULL;
-   }
-}
-
-
-/**
- * gl_renderbuffer::Delete()
- */
-static void
-st_renderbuffer_delete(struct gl_renderbuffer *rb)
-{
-   struct st_renderbuffer *strb = st_renderbuffer(rb);
-   ASSERT(strb);
-   pipe_surface_reference(&strb->surface, NULL);
-   pipe_resource_reference(&strb->texture, NULL);
-   pipe_sampler_view_reference(&strb->sampler_view, NULL);
-   free(strb->data);
-   free(strb);
-}
-
-
-/**
- * gl_renderbuffer::GetPointer()
- */
-static void *
-null_get_pointer(struct gl_context * ctx, struct gl_renderbuffer *rb,
-                 GLint x, GLint y)
-{
-   /* By returning NULL we force all software rendering to go through
-    * the span routines.
-    */
-#if 0
-   assert(0);  /* Should never get called with softpipe */
-#endif
-   return NULL;
-}
-
-
-/**
- * Called via ctx->Driver.NewFramebuffer()
- */
-static struct gl_framebuffer *
-st_new_framebuffer(struct gl_context *ctx, GLuint name)
-{
-   /* XXX not sure we need to subclass gl_framebuffer for pipe */
-   return _mesa_new_framebuffer(ctx, name);
-}
-
-
-/**
- * Called via ctx->Driver.NewRenderbuffer()
- */
-static struct gl_renderbuffer *
-st_new_renderbuffer(struct gl_context *ctx, GLuint name)
-{
-   struct st_renderbuffer *strb = ST_CALLOC_STRUCT(st_renderbuffer);
-   if (strb) {
-      _mesa_init_renderbuffer(&strb->Base, name);
-      strb->Base.Delete = st_renderbuffer_delete;
-      strb->Base.AllocStorage = st_renderbuffer_alloc_storage;
-      strb->Base.GetPointer = null_get_pointer;
-      strb->format = PIPE_FORMAT_NONE;
-      return &strb->Base;
-   }
-   return NULL;
-}
-
-
-/**
- * Allocate a renderbuffer for a an on-screen window (not a user-created
- * renderbuffer).  The window system code determines the format.
- */
-struct gl_renderbuffer *
-st_new_renderbuffer_fb(enum pipe_format format, int samples, boolean sw)
-{
-   struct st_renderbuffer *strb;
-
-   strb = ST_CALLOC_STRUCT(st_renderbuffer);
-   if (!strb) {
-      _mesa_error(NULL, GL_OUT_OF_MEMORY, "creating renderbuffer");
-      return NULL;
-   }
-
-   _mesa_init_renderbuffer(&strb->Base, 0);
-   strb->Base.ClassID = 0x4242; /* just a unique value */
-   strb->Base.NumSamples = samples;
-   strb->Base.Format = st_pipe_format_to_mesa_format(format);
-   strb->Base._BaseFormat = _mesa_get_format_base_format(strb->Base.Format);
-   strb->Base.DataType = st_format_datatype(format);
-   strb->format = format;
-   strb->software = sw;
-   
-   switch (format) {
-   case PIPE_FORMAT_R8G8B8A8_UNORM:
-   case PIPE_FORMAT_B8G8R8A8_UNORM:
-   case PIPE_FORMAT_A8R8G8B8_UNORM:
-   case PIPE_FORMAT_R8G8B8X8_UNORM:
-   case PIPE_FORMAT_B8G8R8X8_UNORM:
-   case PIPE_FORMAT_X8R8G8B8_UNORM:
-   case PIPE_FORMAT_B5G5R5A1_UNORM:
-   case PIPE_FORMAT_B4G4R4A4_UNORM:
-   case PIPE_FORMAT_B5G6R5_UNORM:
-      strb->Base.InternalFormat = GL_RGBA;
-      break;
-   case PIPE_FORMAT_Z16_UNORM:
-      strb->Base.InternalFormat = GL_DEPTH_COMPONENT16;
-      break;
-   case PIPE_FORMAT_Z32_UNORM:
-      strb->Base.InternalFormat = GL_DEPTH_COMPONENT32;
-      break;
-   case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
-   case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
-   case PIPE_FORMAT_Z24X8_UNORM:
-   case PIPE_FORMAT_X8Z24_UNORM:
-      strb->Base.InternalFormat = GL_DEPTH24_STENCIL8_EXT;
-      break;
-   case PIPE_FORMAT_S8_USCALED:
-      strb->Base.InternalFormat = GL_STENCIL_INDEX8_EXT;
-      break;
-   case PIPE_FORMAT_R16G16B16A16_SNORM:
-      strb->Base.InternalFormat = GL_RGBA16;
-      break;
-   case PIPE_FORMAT_R8_UNORM:
-      strb->Base.InternalFormat = GL_R8;
-      break;
-   case PIPE_FORMAT_R8G8_UNORM:
-      strb->Base.InternalFormat = GL_RG8;
-      break;
-   case PIPE_FORMAT_R16_UNORM:
-      strb->Base.InternalFormat = GL_R16;
-      break;
-   case PIPE_FORMAT_R16G16_UNORM:
-      strb->Base.InternalFormat = GL_RG16;
-      break;
-   default:
-      _mesa_problem(NULL,
-		    "Unexpected format in st_new_renderbuffer_fb");
-      free(strb);
-      return NULL;
-   }
-
-   /* st-specific methods */
-   strb->Base.Delete = st_renderbuffer_delete;
-   strb->Base.AllocStorage = st_renderbuffer_alloc_storage;
-   strb->Base.GetPointer = null_get_pointer;
-
-   /* surface is allocated in st_renderbuffer_alloc_storage() */
-   strb->surface = NULL;
-
-   return &strb->Base;
-}
-
-
-
-
-/**
- * Called via ctx->Driver.BindFramebufferEXT().
- */
-static void
-st_bind_framebuffer(struct gl_context *ctx, GLenum target,
-                    struct gl_framebuffer *fb, struct gl_framebuffer *fbread)
-{
-
-}
-
-/**
- * Called by ctx->Driver.FramebufferRenderbuffer
- */
-static void
-st_framebuffer_renderbuffer(struct gl_context *ctx, 
-                            struct gl_framebuffer *fb,
-                            GLenum attachment,
-                            struct gl_renderbuffer *rb)
-{
-   /* XXX no need for derivation? */
-   _mesa_framebuffer_renderbuffer(ctx, fb, attachment, rb);
-}
-
-
-/**
- * Called by ctx->Driver.RenderTexture
- */
-static void
-st_render_texture(struct gl_context *ctx,
-                  struct gl_framebuffer *fb,
-                  struct gl_renderbuffer_attachment *att)
-{
-   struct st_context *st = st_context(ctx);
-   struct pipe_context *pipe = st->pipe;
-   struct st_renderbuffer *strb;
-   struct gl_renderbuffer *rb;
-   struct pipe_resource *pt = st_get_texobj_resource(att->Texture);
-   struct st_texture_object *stObj;
-   const struct gl_texture_image *texImage;
-   struct pipe_surface surf_tmpl;
-
-   /* When would this fail?  Perhaps assert? */
-   if (!pt) 
-      return;
-
-   /* get pointer to texture image we're rendeing to */
-   texImage = att->Texture->Image[att->CubeMapFace][att->TextureLevel];
-
-   /* create new renderbuffer which wraps the texture image */
-   rb = st_new_renderbuffer(ctx, 0);
-   if (!rb) {
-      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glFramebufferTexture()");
-      return;
-   }
-
-   _mesa_reference_renderbuffer(&att->Renderbuffer, rb);
-   assert(rb->RefCount == 1);
-   rb->AllocStorage = NULL; /* should not get called */
-   strb = st_renderbuffer(rb);
-
-   assert(strb->Base.RefCount > 0);
-
-   /* get the texture for the texture object */
-   stObj = st_texture_object(att->Texture);
-
-   /* point renderbuffer at texobject */
-   strb->rtt = stObj;
-   strb->rtt_level = att->TextureLevel;
-   strb->rtt_face = att->CubeMapFace;
-   strb->rtt_slice = att->Zoffset;
-
-   rb->Width = texImage->Width2;
-   rb->Height = texImage->Height2;
-   rb->_BaseFormat = texImage->_BaseFormat;
-   /*printf("***** render to texture level %d: %d x %d\n", att->TextureLevel, rb->Width, rb->Height);*/
-
-   /*printf("***** pipe texture %d x %d\n", pt->width0, pt->height0);*/
-
-   pipe_resource_reference( &strb->texture, pt );
-
-   pipe_surface_reference(&strb->surface, NULL);
-
-   pipe_sampler_view_reference(&strb->sampler_view,
-                               st_get_texture_sampler_view(stObj, pipe));
-
-   assert(strb->rtt_level <= strb->texture->last_level);
-
-   /* new surface for rendering into the texture */
-   memset(&surf_tmpl, 0, sizeof(surf_tmpl));
-   surf_tmpl.format = ctx->Color.sRGBEnabled ? strb->texture->format : util_format_linear(strb->texture->format);
-   surf_tmpl.usage = PIPE_BIND_RENDER_TARGET;
-   surf_tmpl.u.tex.level = strb->rtt_level;
-   surf_tmpl.u.tex.first_layer = strb->rtt_face + strb->rtt_slice;
-   surf_tmpl.u.tex.last_layer = strb->rtt_face + strb->rtt_slice;
-   strb->surface = pipe->create_surface(pipe,
-                                        strb->texture,
-                                        &surf_tmpl);
-
-   strb->format = pt->format;
-
-   strb->Base.Format = st_pipe_format_to_mesa_format(pt->format);
-   strb->Base.DataType = st_format_datatype(pt->format);
-
-   /*
-   printf("RENDER TO TEXTURE obj=%p pt=%p surf=%p  %d x %d\n",
-          att->Texture, pt, strb->surface, rb->Width, rb->Height);
-   */
-
-   /* Invalidate buffer state so that the pipe's framebuffer state
-    * gets updated.
-    * That's where the new renderbuffer (which we just created) gets
-    * passed to the pipe as a (color/depth) render target.
-    */
-   st_invalidate_state(ctx, _NEW_BUFFERS);
-}
-
-
-/**
- * Called via ctx->Driver.FinishRenderTexture.
- */
-static void
-st_finish_render_texture(struct gl_context *ctx,
-                         struct gl_renderbuffer_attachment *att)
-{
-   struct st_renderbuffer *strb = st_renderbuffer(att->Renderbuffer);
-
-   if (!strb)
-      return;
-
-   strb->rtt = NULL;
-
-   /*
-   printf("FINISH RENDER TO TEXTURE surf=%p\n", strb->surface);
-   */
-
-   /* restore previous framebuffer state */
-   st_invalidate_state(ctx, _NEW_BUFFERS);
-}
-
-
-/**
- * Validate a renderbuffer attachment for a particular set of bindings.
- */
-static GLboolean
-st_validate_attachment(struct gl_context *ctx,
-		       struct pipe_screen *screen,
-		       const struct gl_renderbuffer_attachment *att,
-		       unsigned bindings)
-{
-   const struct st_texture_object *stObj = st_texture_object(att->Texture);
-   enum pipe_format format;
-   gl_format texFormat;
-
-   /* Only validate texture attachments for now, since
-    * st_renderbuffer_alloc_storage makes sure that
-    * the format is supported.
-    */
-   if (att->Type != GL_TEXTURE)
-      return GL_TRUE;
-
-   if (!stObj)
-      return GL_FALSE;
-
-   format = stObj->pt->format;
-   texFormat =
-      stObj->base.Image[att->CubeMapFace][att->TextureLevel]->TexFormat;
-
-   /* If the encoding is sRGB and sRGB rendering cannot be enabled,
-    * check for linear format support instead.
-    * Later when we create a surface, we change the format to a linear one. */
-   if (!ctx->Const.sRGBCapable &&
-       _mesa_get_format_color_encoding(texFormat) == GL_SRGB) {
-      const gl_format linearFormat = _mesa_get_srgb_format_linear(texFormat);
-      format = st_mesa_format_to_pipe_format(linearFormat);
-   }
-
-   return screen->is_format_supported(screen, format,
-                                      PIPE_TEXTURE_2D,
-                                      stObj->pt->nr_samples, bindings);
-}
-
-
-/**
- * Check if two renderbuffer attachments name a combined depth/stencil
- * renderbuffer.
- */
-GLboolean
-st_is_depth_stencil_combined(const struct gl_renderbuffer_attachment *depth,
-                             const struct gl_renderbuffer_attachment *stencil)
-{
-   assert(depth && stencil);
-
-   if (depth->Type == stencil->Type) {
-      if (depth->Type == GL_RENDERBUFFER_EXT &&
-          depth->Renderbuffer == stencil->Renderbuffer)
-         return GL_TRUE;
-
-      if (depth->Type == GL_TEXTURE &&
-          depth->Texture == stencil->Texture)
-         return GL_TRUE;
-   }
-
-   return GL_FALSE;
-}
- 
-
-/**
- * Check that the framebuffer configuration is valid in terms of what
- * the driver can support.
- *
- * For Gallium we only supports combined Z+stencil, not separate buffers.
- */
-static void
-st_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
-{
-   struct st_context *st = st_context(ctx);
-   struct pipe_screen *screen = st->pipe->screen;
-   const struct gl_renderbuffer_attachment *depth =
-         &fb->Attachment[BUFFER_DEPTH];
-   const struct gl_renderbuffer_attachment *stencil =
-         &fb->Attachment[BUFFER_STENCIL];
-   GLuint i;
-   enum pipe_format first_format = PIPE_FORMAT_NONE;
-   boolean mixed_formats =
-         screen->get_param(screen, PIPE_CAP_MIXED_COLORBUFFER_FORMATS) != 0;
-
-   if (depth->Type && stencil->Type && depth->Type != stencil->Type) {
-      fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
-      return;
-   }
-   if (depth->Type == GL_RENDERBUFFER_EXT &&
-       stencil->Type == GL_RENDERBUFFER_EXT &&
-       depth->Renderbuffer != stencil->Renderbuffer) {
-      fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
-      return;
-   }
-   if (depth->Type == GL_TEXTURE &&
-       stencil->Type == GL_TEXTURE &&
-       depth->Texture != stencil->Texture) {
-      fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
-      return;
-   }
-
-   if (!st_validate_attachment(ctx,
-                               screen,
-                               depth,
-			       PIPE_BIND_DEPTH_STENCIL)) {
-      fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
-      return;
-   }
-   if (!st_validate_attachment(ctx,
-                               screen,
-                               stencil,
-			       PIPE_BIND_DEPTH_STENCIL)) {
-      fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
-      return;
-   }
-   for (i = 0; i < ctx->Const.MaxColorAttachments; i++) {
-      struct gl_renderbuffer_attachment *att =
-            &fb->Attachment[BUFFER_COLOR0 + i];
-      enum pipe_format format;
-
-      if (!st_validate_attachment(ctx,
-                                  screen,
-				  att,
-				  PIPE_BIND_RENDER_TARGET)) {
-	 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
-	 return;
-      }
-
-      if (!mixed_formats) {
-         /* Disallow mixed formats. */
-         if (att->Type != GL_NONE) {
-            format = st_renderbuffer(att->Renderbuffer)->surface->format;
-         } else {
-            continue;
-         }
-
-         if (first_format == PIPE_FORMAT_NONE) {
-            first_format = format;
-         } else if (format != first_format) {
-            fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
-            return;
-         }
-      }
-   }
-}
-
-
-/**
- * Called via glDrawBuffer.
- */
-static void
-st_DrawBuffers(struct gl_context *ctx, GLsizei count, const GLenum *buffers)
-{
-   struct st_context *st = st_context(ctx);
-   struct gl_framebuffer *fb = ctx->DrawBuffer;
-   GLuint i;
-
-   (void) count;
-   (void) buffers;
-
-   /* add the renderbuffers on demand */
-   for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
-      gl_buffer_index idx = fb->_ColorDrawBufferIndexes[i];
-      st_manager_add_color_renderbuffer(st, fb, idx);
-   }
-}
-
-
-/**
- * Called via glReadBuffer.
- */
-static void
-st_ReadBuffer(struct gl_context *ctx, GLenum buffer)
-{
-   struct st_context *st = st_context(ctx);
-   struct gl_framebuffer *fb = ctx->ReadBuffer;
-
-   (void) buffer;
-
-   /* add the renderbuffer on demand */
-   st_manager_add_color_renderbuffer(st, fb, fb->_ColorReadBufferIndex);
-}
-
-
-void st_init_fbo_functions(struct dd_function_table *functions)
-{
-#if FEATURE_EXT_framebuffer_object
-   functions->NewFramebuffer = st_new_framebuffer;
-   functions->NewRenderbuffer = st_new_renderbuffer;
-   functions->BindFramebuffer = st_bind_framebuffer;
-   functions->FramebufferRenderbuffer = st_framebuffer_renderbuffer;
-   functions->RenderTexture = st_render_texture;
-   functions->FinishRenderTexture = st_finish_render_texture;
-   functions->ValidateFramebuffer = st_validate_framebuffer;
-#endif
-   /* no longer needed by core Mesa, drivers handle resizes...
-   functions->ResizeBuffers = st_resize_buffers;
-   */
-
-   functions->DrawBuffers = st_DrawBuffers;
-   functions->ReadBuffer = st_ReadBuffer;
-}
-
-/* XXX unused ? */
-struct pipe_sampler_view *
-st_get_renderbuffer_sampler_view(struct st_renderbuffer *rb,
-                                 struct pipe_context *pipe)
-{
-   if (!rb->sampler_view) {
-      rb->sampler_view = st_create_texture_sampler_view(pipe, rb->texture);
-   }
-
-   return rb->sampler_view;
-}
+/**************************************************************************

+ * 

+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.

+ * All Rights Reserved.

+ * 

+ * Permission is hereby granted, free of charge, to any person obtaining a

+ * copy of this software and associated documentation files (the

+ * "Software"), to deal in the Software without restriction, including

+ * without limitation the rights to use, copy, modify, merge, publish,

+ * distribute, sub license, and/or sell copies of the Software, and to

+ * permit persons to whom the Software is furnished to do so, subject to

+ * the following conditions:

+ * 

+ * The above copyright notice and this permission notice (including the

+ * next paragraph) shall be included in all copies or substantial portions

+ * of the Software.

+ * 

+ * 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 NON-INFRINGEMENT.

+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.

+ * 

+ **************************************************************************/

+

+

+/**

+ * Framebuffer/renderbuffer functions.

+ *

+ * \author Brian Paul

+ */

+

+

+#include "main/imports.h"

+#include "main/context.h"

+#include "main/fbobject.h"

+#include "main/framebuffer.h"

+#include "main/macros.h"

+#include "main/mfeatures.h"

+#include "main/renderbuffer.h"

+

+#include "pipe/p_context.h"

+#include "pipe/p_defines.h"

+#include "pipe/p_screen.h"

+#include "st_context.h"

+#include "st_cb_fbo.h"

+#include "st_cb_flush.h"

+#include "st_format.h"

+#include "st_texture.h"

+#include "st_manager.h"

+

+#include "util/u_format.h"

+#include "util/u_inlines.h"

+#include "util/u_surface.h"

+

+

+/**

+ * gl_renderbuffer::AllocStorage()

+ * This is called to allocate the original drawing surface, and

+ * during window resize.

+ */

+static GLboolean

+st_renderbuffer_alloc_storage(struct gl_context * ctx,

+                              struct gl_renderbuffer *rb,

+                              GLenum internalFormat,

+                              GLuint width, GLuint height)

+{

+   struct st_context *st = st_context(ctx);

+   struct pipe_context *pipe = st->pipe;

+   struct pipe_screen *screen = st->pipe->screen;

+   struct st_renderbuffer *strb = st_renderbuffer(rb);

+   enum pipe_format format;

+   struct pipe_surface surf_tmpl;

+

+   if (strb->format != PIPE_FORMAT_NONE)

+      format = strb->format;

+   else

+      format = st_choose_renderbuffer_format(screen, internalFormat,

+                                             rb->NumSamples);

+

+   if (format == PIPE_FORMAT_NONE) {

+      return FALSE;

+   }

+

+   /* init renderbuffer fields */

+   strb->Base.Width  = width;

+   strb->Base.Height = height;

+   strb->Base.Format = st_pipe_format_to_mesa_format(format);

+   strb->Base._BaseFormat = _mesa_base_fbo_format(ctx, internalFormat);

+   strb->Base.DataType = st_format_datatype(format);

+

+   strb->defined = GL_FALSE;  /* undefined contents now */

+

+   if (strb->software) {

+      size_t size;

+      

+      free(strb->data);

+

+      assert(strb->format != PIPE_FORMAT_NONE);

+      

+      strb->stride = util_format_get_stride(strb->format, width);

+      size = util_format_get_2d_size(strb->format, strb->stride, height);

+      

+      strb->data = malloc(size);

+      

+      return strb->data != NULL;

+   }

+   else {

+      struct pipe_resource template;

+    

+      /* Free the old surface and texture

+       */

+      pipe_surface_reference( &strb->surface, NULL );

+      pipe_resource_reference( &strb->texture, NULL );

+      pipe_sampler_view_reference(&strb->sampler_view, NULL);

+

+      /* Setup new texture template.

+       */

+      memset(&template, 0, sizeof(template));

+      template.target = st->internal_target;

+      template.format = format;

+      template.width0 = width;

+      template.height0 = height;

+      template.depth0 = 1;

+      template.array_size = 1;

+      template.last_level = 0;

+      template.nr_samples = rb->NumSamples;

+      if (util_format_is_depth_or_stencil(format)) {

+         template.bind = PIPE_BIND_DEPTH_STENCIL;

+      }

+      else {

+         template.bind = (PIPE_BIND_DISPLAY_TARGET |

+                          PIPE_BIND_RENDER_TARGET);

+      }

+

+      strb->texture = screen->resource_create(screen, &template);

+

+      if (!strb->texture) 

+         return FALSE;

+

+      memset(&surf_tmpl, 0, sizeof(surf_tmpl));

+      u_surface_default_template(&surf_tmpl, strb->texture, template.bind);

+      strb->surface = pipe->create_surface(pipe,

+                                           strb->texture,

+                                           &surf_tmpl);

+      if (strb->surface) {

+         assert(strb->surface->texture);

+         assert(strb->surface->format);

+         assert(strb->surface->width == width);

+         assert(strb->surface->height == height);

+      }

+

+      return strb->surface != NULL;

+   }

+}

+

+

+/**

+ * gl_renderbuffer::Delete()

+ */

+static void

+st_renderbuffer_delete(struct gl_renderbuffer *rb)

+{

+   struct st_renderbuffer *strb = st_renderbuffer(rb);

+   ASSERT(strb);

+   pipe_surface_reference(&strb->surface, NULL);

+   pipe_resource_reference(&strb->texture, NULL);

+   pipe_sampler_view_reference(&strb->sampler_view, NULL);

+   free(strb->data);

+   free(strb);

+}

+

+

+/**

+ * gl_renderbuffer::GetPointer()

+ */

+static void *

+null_get_pointer(struct gl_context * ctx, struct gl_renderbuffer *rb,

+                 GLint x, GLint y)

+{

+   /* By returning NULL we force all software rendering to go through

+    * the span routines.

+    */

+#if 0

+   assert(0);  /* Should never get called with softpipe */

+#endif

+   return NULL;

+}

+

+

+/**

+ * Called via ctx->Driver.NewFramebuffer()

+ */

+static struct gl_framebuffer *

+st_new_framebuffer(struct gl_context *ctx, GLuint name)

+{

+   /* XXX not sure we need to subclass gl_framebuffer for pipe */

+   return _mesa_new_framebuffer(ctx, name);

+}

+

+

+/**

+ * Called via ctx->Driver.NewRenderbuffer()

+ */

+static struct gl_renderbuffer *

+st_new_renderbuffer(struct gl_context *ctx, GLuint name)

+{

+   struct st_renderbuffer *strb = ST_CALLOC_STRUCT(st_renderbuffer);

+   if (strb) {

+      _mesa_init_renderbuffer(&strb->Base, name);

+      strb->Base.Delete = st_renderbuffer_delete;

+      strb->Base.AllocStorage = st_renderbuffer_alloc_storage;

+      strb->Base.GetPointer = null_get_pointer;

+      strb->format = PIPE_FORMAT_NONE;

+      return &strb->Base;

+   }

+   return NULL;

+}

+

+

+/**

+ * Allocate a renderbuffer for a an on-screen window (not a user-created

+ * renderbuffer).  The window system code determines the format.

+ */

+struct gl_renderbuffer *

+st_new_renderbuffer_fb(enum pipe_format format, int samples, boolean sw)

+{

+   struct st_renderbuffer *strb;

+

+   strb = ST_CALLOC_STRUCT(st_renderbuffer);

+   if (!strb) {

+      _mesa_error(NULL, GL_OUT_OF_MEMORY, "creating renderbuffer");

+      return NULL;

+   }

+

+   _mesa_init_renderbuffer(&strb->Base, 0);

+   strb->Base.ClassID = 0x4242; /* just a unique value */

+   strb->Base.NumSamples = samples;

+   strb->Base.Format = st_pipe_format_to_mesa_format(format);

+   strb->Base._BaseFormat = _mesa_get_format_base_format(strb->Base.Format);

+   strb->Base.DataType = st_format_datatype(format);

+   strb->format = format;

+   strb->software = sw;

+   

+   switch (format) {

+   case PIPE_FORMAT_R8G8B8A8_UNORM:

+   case PIPE_FORMAT_B8G8R8A8_UNORM:

+   case PIPE_FORMAT_A8R8G8B8_UNORM:

+   case PIPE_FORMAT_R8G8B8X8_UNORM:

+   case PIPE_FORMAT_B8G8R8X8_UNORM:

+   case PIPE_FORMAT_X8R8G8B8_UNORM:

+   case PIPE_FORMAT_B5G5R5A1_UNORM:

+   case PIPE_FORMAT_B4G4R4A4_UNORM:

+   case PIPE_FORMAT_B5G6R5_UNORM:

+      strb->Base.InternalFormat = GL_RGBA;

+      break;

+   case PIPE_FORMAT_Z16_UNORM:

+      strb->Base.InternalFormat = GL_DEPTH_COMPONENT16;

+      break;

+   case PIPE_FORMAT_Z32_UNORM:

+      strb->Base.InternalFormat = GL_DEPTH_COMPONENT32;

+      break;

+   case PIPE_FORMAT_Z24_UNORM_S8_USCALED:

+   case PIPE_FORMAT_S8_USCALED_Z24_UNORM:

+   case PIPE_FORMAT_Z24X8_UNORM:

+   case PIPE_FORMAT_X8Z24_UNORM:

+      strb->Base.InternalFormat = GL_DEPTH24_STENCIL8_EXT;

+      break;

+   case PIPE_FORMAT_S8_USCALED:

+      strb->Base.InternalFormat = GL_STENCIL_INDEX8_EXT;

+      break;

+   case PIPE_FORMAT_R16G16B16A16_SNORM:

+      strb->Base.InternalFormat = GL_RGBA16;

+      break;

+   case PIPE_FORMAT_R8_UNORM:

+      strb->Base.InternalFormat = GL_R8;

+      break;

+   case PIPE_FORMAT_R8G8_UNORM:

+      strb->Base.InternalFormat = GL_RG8;

+      break;

+   case PIPE_FORMAT_R16_UNORM:

+      strb->Base.InternalFormat = GL_R16;

+      break;

+   case PIPE_FORMAT_R16G16_UNORM:

+      strb->Base.InternalFormat = GL_RG16;

+      break;

+   default:

+      _mesa_problem(NULL,

+		    "Unexpected format in st_new_renderbuffer_fb");

+      free(strb);

+      return NULL;

+   }

+

+   /* st-specific methods */

+   strb->Base.Delete = st_renderbuffer_delete;

+   strb->Base.AllocStorage = st_renderbuffer_alloc_storage;

+   strb->Base.GetPointer = null_get_pointer;

+

+   /* surface is allocated in st_renderbuffer_alloc_storage() */

+   strb->surface = NULL;

+

+   return &strb->Base;

+}

+

+

+

+

+/**

+ * Called via ctx->Driver.BindFramebufferEXT().

+ */

+static void

+st_bind_framebuffer(struct gl_context *ctx, GLenum target,

+                    struct gl_framebuffer *fb, struct gl_framebuffer *fbread)

+{

+

+}

+

+/**

+ * Called by ctx->Driver.FramebufferRenderbuffer

+ */

+static void

+st_framebuffer_renderbuffer(struct gl_context *ctx, 

+                            struct gl_framebuffer *fb,

+                            GLenum attachment,

+                            struct gl_renderbuffer *rb)

+{

+   /* XXX no need for derivation? */

+   _mesa_framebuffer_renderbuffer(ctx, fb, attachment, rb);

+}

+

+

+/**

+ * Called by ctx->Driver.RenderTexture

+ */

+static void

+st_render_texture(struct gl_context *ctx,

+                  struct gl_framebuffer *fb,

+                  struct gl_renderbuffer_attachment *att)

+{

+   struct st_context *st = st_context(ctx);

+   struct pipe_context *pipe = st->pipe;

+   struct st_renderbuffer *strb;

+   struct gl_renderbuffer *rb;

+   struct pipe_resource *pt = st_get_texobj_resource(att->Texture);

+   struct st_texture_object *stObj;

+   const struct gl_texture_image *texImage;

+   struct pipe_surface surf_tmpl;

+

+   /* When would this fail?  Perhaps assert? */

+   if (!pt) 

+      return;

+

+   /* get pointer to texture image we're rendeing to */

+   texImage = _mesa_get_attachment_teximage(att);

+

+   /* create new renderbuffer which wraps the texture image */

+   rb = st_new_renderbuffer(ctx, 0);

+   if (!rb) {

+      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glFramebufferTexture()");

+      return;

+   }

+

+   _mesa_reference_renderbuffer(&att->Renderbuffer, rb);

+   assert(rb->RefCount == 1);

+   rb->AllocStorage = NULL; /* should not get called */

+   strb = st_renderbuffer(rb);

+

+   assert(strb->Base.RefCount > 0);

+

+   /* get the texture for the texture object */

+   stObj = st_texture_object(att->Texture);

+

+   /* point renderbuffer at texobject */

+   strb->rtt = stObj;

+   strb->rtt_level = att->TextureLevel;

+   strb->rtt_face = att->CubeMapFace;

+   strb->rtt_slice = att->Zoffset;

+

+   rb->Width = texImage->Width2;

+   rb->Height = texImage->Height2;

+   rb->_BaseFormat = texImage->_BaseFormat;

+   /*printf("***** render to texture level %d: %d x %d\n", att->TextureLevel, rb->Width, rb->Height);*/

+

+   /*printf("***** pipe texture %d x %d\n", pt->width0, pt->height0);*/

+

+   pipe_resource_reference( &strb->texture, pt );

+

+   pipe_surface_reference(&strb->surface, NULL);

+

+   pipe_sampler_view_reference(&strb->sampler_view,

+                               st_get_texture_sampler_view(stObj, pipe));

+

+   assert(strb->rtt_level <= strb->texture->last_level);

+

+   /* new surface for rendering into the texture */

+   memset(&surf_tmpl, 0, sizeof(surf_tmpl));

+   surf_tmpl.format = ctx->Color.sRGBEnabled ? strb->texture->format : util_format_linear(strb->texture->format);

+   surf_tmpl.usage = PIPE_BIND_RENDER_TARGET;

+   surf_tmpl.u.tex.level = strb->rtt_level;

+   surf_tmpl.u.tex.first_layer = strb->rtt_face + strb->rtt_slice;

+   surf_tmpl.u.tex.last_layer = strb->rtt_face + strb->rtt_slice;

+   strb->surface = pipe->create_surface(pipe,

+                                        strb->texture,

+                                        &surf_tmpl);

+

+   strb->format = pt->format;

+

+   strb->Base.Format = st_pipe_format_to_mesa_format(pt->format);

+   strb->Base.DataType = st_format_datatype(pt->format);

+

+   /*

+   printf("RENDER TO TEXTURE obj=%p pt=%p surf=%p  %d x %d\n",

+          att->Texture, pt, strb->surface, rb->Width, rb->Height);

+   */

+

+   /* Invalidate buffer state so that the pipe's framebuffer state

+    * gets updated.

+    * That's where the new renderbuffer (which we just created) gets

+    * passed to the pipe as a (color/depth) render target.

+    */

+   st_invalidate_state(ctx, _NEW_BUFFERS);

+}

+

+

+/**

+ * Called via ctx->Driver.FinishRenderTexture.

+ */

+static void

+st_finish_render_texture(struct gl_context *ctx,

+                         struct gl_renderbuffer_attachment *att)

+{

+   struct st_renderbuffer *strb = st_renderbuffer(att->Renderbuffer);

+

+   if (!strb)

+      return;

+

+   strb->rtt = NULL;

+

+   /*

+   printf("FINISH RENDER TO TEXTURE surf=%p\n", strb->surface);

+   */

+

+   /* restore previous framebuffer state */

+   st_invalidate_state(ctx, _NEW_BUFFERS);

+}

+

+

+/**

+ * Validate a renderbuffer attachment for a particular set of bindings.

+ */

+static GLboolean

+st_validate_attachment(struct gl_context *ctx,

+		       struct pipe_screen *screen,

+		       const struct gl_renderbuffer_attachment *att,

+		       unsigned bindings)

+{

+   const struct st_texture_object *stObj = st_texture_object(att->Texture);

+   enum pipe_format format;

+   gl_format texFormat;

+

+   /* Only validate texture attachments for now, since

+    * st_renderbuffer_alloc_storage makes sure that

+    * the format is supported.

+    */

+   if (att->Type != GL_TEXTURE)

+      return GL_TRUE;

+

+   if (!stObj)

+      return GL_FALSE;

+

+   format = stObj->pt->format;

+   texFormat = _mesa_get_attachment_teximage_const(att)->TexFormat;

+

+   /* If the encoding is sRGB and sRGB rendering cannot be enabled,

+    * check for linear format support instead.

+    * Later when we create a surface, we change the format to a linear one. */

+   if (!ctx->Const.sRGBCapable &&

+       _mesa_get_format_color_encoding(texFormat) == GL_SRGB) {

+      const gl_format linearFormat = _mesa_get_srgb_format_linear(texFormat);

+      format = st_mesa_format_to_pipe_format(linearFormat);

+   }

+

+   return screen->is_format_supported(screen, format,

+                                      PIPE_TEXTURE_2D,

+                                      stObj->pt->nr_samples, bindings);

+}

+

+

+/**

+ * Check if two renderbuffer attachments name a combined depth/stencil

+ * renderbuffer.

+ */

+GLboolean

+st_is_depth_stencil_combined(const struct gl_renderbuffer_attachment *depth,

+                             const struct gl_renderbuffer_attachment *stencil)

+{

+   assert(depth && stencil);

+

+   if (depth->Type == stencil->Type) {

+      if (depth->Type == GL_RENDERBUFFER_EXT &&

+          depth->Renderbuffer == stencil->Renderbuffer)

+         return GL_TRUE;

+

+      if (depth->Type == GL_TEXTURE &&

+          depth->Texture == stencil->Texture)

+         return GL_TRUE;

+   }

+

+   return GL_FALSE;

+}

+ 

+

+/**

+ * Check that the framebuffer configuration is valid in terms of what

+ * the driver can support.

+ *

+ * For Gallium we only supports combined Z+stencil, not separate buffers.

+ */

+static void

+st_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)

+{

+   struct st_context *st = st_context(ctx);

+   struct pipe_screen *screen = st->pipe->screen;

+   const struct gl_renderbuffer_attachment *depth =

+         &fb->Attachment[BUFFER_DEPTH];

+   const struct gl_renderbuffer_attachment *stencil =

+         &fb->Attachment[BUFFER_STENCIL];

+   GLuint i;

+   enum pipe_format first_format = PIPE_FORMAT_NONE;

+   boolean mixed_formats =

+         screen->get_param(screen, PIPE_CAP_MIXED_COLORBUFFER_FORMATS) != 0;

+

+   if (depth->Type && stencil->Type && depth->Type != stencil->Type) {

+      fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;

+      return;

+   }

+   if (depth->Type == GL_RENDERBUFFER_EXT &&

+       stencil->Type == GL_RENDERBUFFER_EXT &&

+       depth->Renderbuffer != stencil->Renderbuffer) {

+      fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;

+      return;

+   }

+   if (depth->Type == GL_TEXTURE &&

+       stencil->Type == GL_TEXTURE &&

+       depth->Texture != stencil->Texture) {

+      fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;

+      return;

+   }

+

+   if (!st_validate_attachment(ctx,

+                               screen,

+                               depth,

+			       PIPE_BIND_DEPTH_STENCIL)) {

+      fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;

+      return;

+   }

+   if (!st_validate_attachment(ctx,

+                               screen,

+                               stencil,

+			       PIPE_BIND_DEPTH_STENCIL)) {

+      fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;

+      return;

+   }

+   for (i = 0; i < ctx->Const.MaxColorAttachments; i++) {

+      struct gl_renderbuffer_attachment *att =

+            &fb->Attachment[BUFFER_COLOR0 + i];

+      enum pipe_format format;

+

+      if (!st_validate_attachment(ctx,

+                                  screen,

+				  att,

+				  PIPE_BIND_RENDER_TARGET)) {

+	 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;

+	 return;

+      }

+

+      if (!mixed_formats) {

+         /* Disallow mixed formats. */

+         if (att->Type != GL_NONE) {

+            format = st_renderbuffer(att->Renderbuffer)->surface->format;

+         } else {

+            continue;

+         }

+

+         if (first_format == PIPE_FORMAT_NONE) {

+            first_format = format;

+         } else if (format != first_format) {

+            fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;

+            return;

+         }

+      }

+   }

+}

+

+

+/**

+ * Called via glDrawBuffer.

+ */

+static void

+st_DrawBuffers(struct gl_context *ctx, GLsizei count, const GLenum *buffers)

+{

+   struct st_context *st = st_context(ctx);

+   struct gl_framebuffer *fb = ctx->DrawBuffer;

+   GLuint i;

+

+   (void) count;

+   (void) buffers;

+

+   /* add the renderbuffers on demand */

+   for (i = 0; i < fb->_NumColorDrawBuffers; i++) {

+      gl_buffer_index idx = fb->_ColorDrawBufferIndexes[i];

+      st_manager_add_color_renderbuffer(st, fb, idx);

+   }

+}

+

+

+/**

+ * Called via glReadBuffer.

+ */

+static void

+st_ReadBuffer(struct gl_context *ctx, GLenum buffer)

+{

+   struct st_context *st = st_context(ctx);

+   struct gl_framebuffer *fb = ctx->ReadBuffer;

+

+   (void) buffer;

+

+   /* add the renderbuffer on demand */

+   st_manager_add_color_renderbuffer(st, fb, fb->_ColorReadBufferIndex);

+}

+

+

+void st_init_fbo_functions(struct dd_function_table *functions)

+{

+#if FEATURE_EXT_framebuffer_object

+   functions->NewFramebuffer = st_new_framebuffer;

+   functions->NewRenderbuffer = st_new_renderbuffer;

+   functions->BindFramebuffer = st_bind_framebuffer;

+   functions->FramebufferRenderbuffer = st_framebuffer_renderbuffer;

+   functions->RenderTexture = st_render_texture;

+   functions->FinishRenderTexture = st_finish_render_texture;

+   functions->ValidateFramebuffer = st_validate_framebuffer;

+#endif

+   /* no longer needed by core Mesa, drivers handle resizes...

+   functions->ResizeBuffers = st_resize_buffers;

+   */

+

+   functions->DrawBuffers = st_DrawBuffers;

+   functions->ReadBuffer = st_ReadBuffer;

+}

+

+/* XXX unused ? */

+struct pipe_sampler_view *

+st_get_renderbuffer_sampler_view(struct st_renderbuffer *rb,

+                                 struct pipe_context *pipe)

+{

+   if (!rb->sampler_view) {

+      rb->sampler_view = st_create_texture_sampler_view(pipe, rb->texture);

+   }

+

+   return rb->sampler_view;

+}