| /************************************************************************** |
| * |
| * 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/renderbuffer.h" |
| |
| #include "pipe/p_context.h" |
| #include "pipe/p_defines.h" |
| #include "pipe/p_inlines.h" |
| #include "pipe/p_winsys.h" |
| #include "st_context.h" |
| #include "st_cb_fbo.h" |
| #include "st_cb_texture.h" |
| #include "st_format.h" |
| #include "st_public.h" |
| |
| |
| |
| /** |
| * Compute the renderbuffer's Red/Green/EtcBit fields from the pipe format. |
| */ |
| static int |
| init_renderbuffer_bits(struct st_renderbuffer *strb, uint pipeFormat) |
| { |
| struct pipe_format_info info; |
| |
| if (!st_get_format_info( pipeFormat, &info )) { |
| assert( 0 ); |
| } |
| |
| strb->Base._ActualFormat = info.base_format; |
| strb->Base.RedBits = info.red_bits; |
| strb->Base.GreenBits = info.green_bits; |
| strb->Base.BlueBits = info.blue_bits; |
| strb->Base.AlphaBits = info.alpha_bits; |
| strb->Base.DepthBits = info.depth_bits; |
| strb->Base.StencilBits = info.stencil_bits; |
| strb->Base.DataType = st_format_datatype(pipeFormat); |
| |
| return info.size; |
| } |
| |
| |
| /** |
| * gl_renderbuffer::AllocStorage() |
| */ |
| static GLboolean |
| st_renderbuffer_alloc_storage(GLcontext * ctx, struct gl_renderbuffer *rb, |
| GLenum internalFormat, |
| GLuint width, GLuint height) |
| { |
| struct pipe_context *pipe = ctx->st->pipe; |
| struct st_renderbuffer *strb = st_renderbuffer(rb); |
| const uint pipeFormat |
| = st_choose_pipe_format(pipe, internalFormat, GL_NONE, GL_NONE); |
| GLuint cpp; |
| GLbitfield flags = PIPE_SURFACE_FLAG_RENDER; /* want to render to surface */ |
| |
| cpp = init_renderbuffer_bits(strb, pipeFormat); |
| |
| if (strb->surface && strb->surface->format != pipeFormat) { |
| /* need to change surface types, free this surface */ |
| pipe_surface_reference(&strb->surface, NULL); |
| assert(strb->surface == NULL); |
| } |
| |
| if (!strb->surface) { |
| strb->surface = pipe->winsys->surface_alloc(pipe->winsys, pipeFormat); |
| assert(strb->surface); |
| if (!strb->surface) |
| return GL_FALSE; |
| strb->surface->cpp = cpp; |
| strb->surface->pitch = pipe->winsys->surface_pitch(pipe->winsys, cpp, |
| width, flags); |
| } |
| |
| /* free old region */ |
| if (strb->surface->region) { |
| /* loop here since mapping is refcounted */ |
| struct pipe_region *r = strb->surface->region; |
| while (r->map) |
| pipe->region_unmap(pipe, r); |
| pipe->winsys->region_release(pipe->winsys, &strb->surface->region); |
| } |
| |
| strb->surface->region = pipe->winsys->region_alloc(pipe->winsys, |
| strb->surface->pitch * |
| cpp * height, flags); |
| if (!strb->surface->region) |
| return GL_FALSE; /* out of memory, try s/w buffer? */ |
| |
| ASSERT(strb->surface->region->buffer); |
| ASSERT(strb->surface->format); |
| |
| strb->Base.Width = strb->surface->width = width; |
| strb->Base.Height = strb->surface->height = height; |
| |
| return GL_TRUE; |
| } |
| |
| |
| /** |
| * gl_renderbuffer::Delete() |
| */ |
| static void |
| st_renderbuffer_delete(struct gl_renderbuffer *rb) |
| { |
| struct st_renderbuffer *strb = st_renderbuffer(rb); |
| ASSERT(strb); |
| if (strb->surface) { |
| struct pipe_winsys *ws = strb->surface->winsys; |
| ws->surface_release(ws, &strb->surface); |
| } |
| free(strb); |
| } |
| |
| |
| /** |
| * gl_renderbuffer::GetPointer() |
| */ |
| static void * |
| null_get_pointer(GLcontext * 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(GLcontext *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(GLcontext *ctx, GLuint name) |
| { |
| struct st_renderbuffer *strb = 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; |
| 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 internal format. |
| */ |
| struct gl_renderbuffer * |
| st_new_renderbuffer_fb(GLenum intFormat) |
| { |
| struct st_renderbuffer *strb; |
| |
| strb = 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.InternalFormat = intFormat; |
| |
| switch (intFormat) { |
| case GL_RGB5: |
| case GL_RGBA8: |
| case GL_RGBA16: |
| strb->Base._BaseFormat = GL_RGBA; |
| break; |
| case GL_DEPTH_COMPONENT16: |
| case GL_DEPTH_COMPONENT32: |
| strb->Base._BaseFormat = GL_DEPTH_COMPONENT; |
| break; |
| case GL_DEPTH24_STENCIL8_EXT: |
| strb->Base._BaseFormat = GL_DEPTH_STENCIL_EXT; |
| break; |
| case GL_STENCIL_INDEX8_EXT: |
| strb->Base._BaseFormat = GL_STENCIL_INDEX; |
| break; |
| default: |
| _mesa_problem(NULL, |
| "Unexpected intFormat in st_new_renderbuffer"); |
| 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(GLcontext *ctx, GLenum target, |
| struct gl_framebuffer *fb, struct gl_framebuffer *fbread) |
| { |
| |
| } |
| |
| /** |
| * Called by ctx->Driver.FramebufferRenderbuffer |
| */ |
| static void |
| st_framebuffer_renderbuffer(GLcontext *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(GLcontext *ctx, |
| struct gl_framebuffer *fb, |
| struct gl_renderbuffer_attachment *att) |
| { |
| struct st_context *st = ctx->st; |
| struct st_renderbuffer *strb; |
| struct gl_renderbuffer *rb; |
| struct pipe_context *pipe = st->pipe; |
| struct pipe_mipmap_tree *mt; |
| |
| assert(!att->Renderbuffer); |
| |
| /* 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); |
| |
| /* get the mipmap tree for the texture */ |
| mt = st_get_texobj_mipmap_tree(att->Texture); |
| assert(mt); |
| assert(mt->level[att->TextureLevel].width); |
| |
| rb->Width = mt->level[att->TextureLevel].width; |
| rb->Height = mt->level[att->TextureLevel].height; |
| |
| /* the renderbuffer's surface is inside the mipmap_tree: */ |
| strb->surface = pipe->get_tex_surface(pipe, mt, |
| att->CubeMapFace, |
| att->TextureLevel, |
| att->Zoffset); |
| assert(strb->surface); |
| |
| init_renderbuffer_bits(strb, mt->format); |
| |
| /* |
| printf("RENDER TO TEXTURE obj=%p mt=%p surf=%p %d x %d\n", |
| att->Texture, mt, 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(GLcontext *ctx, |
| struct gl_renderbuffer_attachment *att) |
| { |
| struct st_renderbuffer *strb = st_renderbuffer(att->Renderbuffer); |
| |
| assert(strb); |
| |
| ctx->st->pipe->flush(ctx->st->pipe, 0x0); |
| |
| /* |
| printf("FINISH RENDER TO TEXTURE surf=%p\n", strb->surface); |
| */ |
| |
| pipe_surface_reference(&strb->surface, NULL); |
| |
| _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); |
| |
| /* restore previous framebuffer state */ |
| st_invalidate_state(ctx, _NEW_BUFFERS); |
| } |
| |
| |
| |
| void st_init_fbo_functions(struct dd_function_table *functions) |
| { |
| 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; |
| /* no longer needed by core Mesa, drivers handle resizes... |
| functions->ResizeBuffers = st_resize_buffers; |
| */ |
| } |