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Diffstat (limited to 'mesalib/src/mesa/state_tracker/st_cb_fbo.c')
-rw-r--r--mesalib/src/mesa/state_tracker/st_cb_fbo.c1329
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;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 14:29:06 +0000