+++ /dev/null
-/**************************************************************************
- *
- * Copyright 2006 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.
- *
- **************************************************************************/
-
-
-#include "imports.h"
-#include "mtypes.h"
-#include "fbobject.h"
-#include "framebuffer.h"
-#include "renderbuffer.h"
-#include "context.h"
-#include "texformat.h"
-#include "texrender.h"
-
-#include "intel_context.h"
-#include "intel_buffers.h"
-#include "intel_depthstencil.h"
-#include "intel_fbo.h"
-#include "intel_mipmap_tree.h"
-#include "intel_regions.h"
-#include "intel_span.h"
-
-
-#define FILE_DEBUG_FLAG DEBUG_FBO
-
-#define INTEL_RB_CLASS 0x12345678
-
-
-/* XXX FBO: move this to intel_context.h (inlined) */
-/**
- * Return a gl_renderbuffer ptr casted to intel_renderbuffer.
- * NULL will be returned if the rb isn't really an intel_renderbuffer.
- * This is determiend by checking the ClassID.
- */
-struct intel_renderbuffer *
-intel_renderbuffer(struct gl_renderbuffer *rb)
-{
- struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb;
- if (irb && irb->Base.ClassID == INTEL_RB_CLASS) {
- /*_mesa_warning(NULL, "Returning non-intel Rb\n");*/
- return irb;
- }
- else
- return NULL;
-}
-
-
-struct intel_renderbuffer *
-intel_get_renderbuffer(struct gl_framebuffer *fb, GLuint attIndex)
-{
- return intel_renderbuffer(fb->Attachment[attIndex].Renderbuffer);
-}
-
-
-void
-intel_flip_renderbuffers(struct intel_framebuffer *intel_fb)
-{
- int current_page = intel_fb->pf_current_page;
- int next_page = (current_page + 1) % intel_fb->pf_num_pages;
- struct gl_renderbuffer *tmp_rb;
-
- /* Exchange renderbuffers if necessary but make sure their reference counts
- * are preserved.
- */
- if (intel_fb->color_rb[current_page] &&
- intel_fb->Base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer !=
- &intel_fb->color_rb[current_page]->Base) {
- tmp_rb = NULL;
- _mesa_reference_renderbuffer(&tmp_rb,
- intel_fb->Base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer);
- tmp_rb = &intel_fb->color_rb[current_page]->Base;
- _mesa_reference_renderbuffer(
- &intel_fb->Base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer, tmp_rb);
- _mesa_reference_renderbuffer(&tmp_rb, NULL);
- }
-
- if (intel_fb->color_rb[next_page] &&
- intel_fb->Base.Attachment[BUFFER_BACK_LEFT].Renderbuffer !=
- &intel_fb->color_rb[next_page]->Base) {
- tmp_rb = NULL;
- _mesa_reference_renderbuffer(&tmp_rb,
- intel_fb->Base.Attachment[BUFFER_BACK_LEFT].Renderbuffer);
- tmp_rb = &intel_fb->color_rb[next_page]->Base;
- _mesa_reference_renderbuffer(
- &intel_fb->Base.Attachment[BUFFER_BACK_LEFT].Renderbuffer, tmp_rb);
- _mesa_reference_renderbuffer(&tmp_rb, NULL);
- }
-}
-
-
-struct intel_region *
-intel_get_rb_region(struct gl_framebuffer *fb, GLuint attIndex)
-{
- struct intel_renderbuffer *irb = intel_get_renderbuffer(fb, attIndex);
-
- if (irb)
- return irb->region;
- else
- return NULL;
-}
-
-
-
-/**
- * Create a new framebuffer object.
- */
-static struct gl_framebuffer *
-intel_new_framebuffer(GLcontext * ctx, GLuint name)
-{
- /* Only drawable state in intel_framebuffer at this time, just use Mesa's
- * class
- */
- return _mesa_new_framebuffer(ctx, name);
-}
-
-
-static void
-intel_delete_renderbuffer(struct gl_renderbuffer *rb)
-{
- GET_CURRENT_CONTEXT(ctx);
- struct intel_context *intel = intel_context(ctx);
- struct intel_renderbuffer *irb = intel_renderbuffer(rb);
-
- ASSERT(irb);
-
- if (irb->PairedStencil || irb->PairedDepth) {
- intel_unpair_depth_stencil(ctx, irb);
- }
-
- if (intel && irb->region) {
- intel_region_release(&irb->region);
- }
-
- _mesa_free(irb);
-}
-
-
-
-/**
- * Return a pointer to a specific pixel in a renderbuffer.
- */
-static void *
-intel_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.
- */
- return NULL;
-}
-
-
-
-/**
- * Called via glRenderbufferStorageEXT() to set the format and allocate
- * storage for a user-created renderbuffer.
- */
-static GLboolean
-intel_alloc_renderbuffer_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
- GLenum internalFormat,
- GLuint width, GLuint height)
-{
- struct intel_context *intel = intel_context(ctx);
- struct intel_renderbuffer *irb = intel_renderbuffer(rb);
- GLboolean softwareBuffer = GL_FALSE;
- int cpp;
-
- ASSERT(rb->Name != 0);
-
- switch (internalFormat) {
- case GL_R3_G3_B2:
- case GL_RGB4:
- case GL_RGB5:
- rb->_ActualFormat = GL_RGB5;
- rb->DataType = GL_UNSIGNED_BYTE;
- rb->RedBits = 5;
- rb->GreenBits = 6;
- rb->BlueBits = 5;
- cpp = 2;
- break;
- case GL_RGB:
- case GL_RGB8:
- case GL_RGB10:
- case GL_RGB12:
- case GL_RGB16:
- case GL_RGBA:
- case GL_RGBA2:
- case GL_RGBA4:
- case GL_RGB5_A1:
- case GL_RGBA8:
- case GL_RGB10_A2:
- case GL_RGBA12:
- case GL_RGBA16:
- rb->_ActualFormat = GL_RGBA8;
- rb->DataType = GL_UNSIGNED_BYTE;
- rb->RedBits = 8;
- rb->GreenBits = 8;
- rb->BlueBits = 8;
- rb->AlphaBits = 8;
- cpp = 4;
- break;
- case GL_STENCIL_INDEX:
- case GL_STENCIL_INDEX1_EXT:
- case GL_STENCIL_INDEX4_EXT:
- case GL_STENCIL_INDEX8_EXT:
- case GL_STENCIL_INDEX16_EXT:
- /* alloc a depth+stencil buffer */
- rb->_ActualFormat = GL_DEPTH24_STENCIL8_EXT;
- rb->DataType = GL_UNSIGNED_INT_24_8_EXT;
- rb->StencilBits = 8;
- cpp = 4;
- break;
- case GL_DEPTH_COMPONENT16:
- rb->_ActualFormat = GL_DEPTH_COMPONENT16;
- rb->DataType = GL_UNSIGNED_SHORT;
- rb->DepthBits = 16;
- cpp = 2;
- break;
- case GL_DEPTH_COMPONENT:
- case GL_DEPTH_COMPONENT24:
- case GL_DEPTH_COMPONENT32:
- rb->_ActualFormat = GL_DEPTH24_STENCIL8_EXT;
- rb->DataType = GL_UNSIGNED_INT_24_8_EXT;
- rb->DepthBits = 24;
- cpp = 4;
- break;
- case GL_DEPTH_STENCIL_EXT:
- case GL_DEPTH24_STENCIL8_EXT:
- rb->_ActualFormat = GL_DEPTH24_STENCIL8_EXT;
- rb->DataType = GL_UNSIGNED_INT_24_8_EXT;
- rb->DepthBits = 24;
- rb->StencilBits = 8;
- cpp = 4;
- break;
- default:
- _mesa_problem(ctx,
- "Unexpected format in intel_alloc_renderbuffer_storage");
- return GL_FALSE;
- }
-
- intelFlush(ctx);
-
- /* free old region */
- if (irb->region) {
- intel_region_release(&irb->region);
- }
-
- /* allocate new memory region/renderbuffer */
- if (softwareBuffer) {
- return _mesa_soft_renderbuffer_storage(ctx, rb, internalFormat,
- width, height);
- }
- else {
- /* Choose a pitch to match hardware requirements:
- */
- GLuint pitch = ((cpp * width + 63) & ~63) / cpp;
-
- /* alloc hardware renderbuffer */
- DBG("Allocating %d x %d Intel RBO (pitch %d)\n", width,
- height, pitch);
-
- irb->region = intel_region_alloc(intel->intelScreen, cpp, pitch, height);
- if (!irb->region)
- return GL_FALSE; /* out of memory? */
-
- ASSERT(irb->region->buffer);
-
- rb->Width = width;
- rb->Height = height;
-
- /* This sets the Get/PutRow/Value functions */
- intel_set_span_functions(&irb->Base);
-
- return GL_TRUE;
- }
-}
-
-
-
-/**
- * Called for each hardware renderbuffer when a _window_ is resized.
- * Just update fields.
- * Not used for user-created renderbuffers!
- */
-static GLboolean
-intel_alloc_window_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
- GLenum internalFormat, GLuint width, GLuint height)
-{
- ASSERT(rb->Name == 0);
- rb->Width = width;
- rb->Height = height;
- rb->_ActualFormat = internalFormat;
-
- return GL_TRUE;
-}
-
-static void
-intel_resize_buffers(GLcontext *ctx, struct gl_framebuffer *fb,
- GLuint width, GLuint height)
-{
- struct intel_framebuffer *intel_fb = (struct intel_framebuffer*)fb;
- int i;
-
- _mesa_resize_framebuffer(ctx, fb, width, height);
-
- fb->Initialized = GL_TRUE; /* XXX remove someday */
-
- if (fb->Name != 0) {
- return;
- }
-
- /* Make sure all window system renderbuffers are up to date */
- for (i = 0; i < 3; i++) {
- struct gl_renderbuffer *rb = &intel_fb->color_rb[i]->Base;
-
- /* only resize if size is changing */
- if (rb && (rb->Width != width || rb->Height != height)) {
- rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height);
- }
- }
-}
-
-static GLboolean
-intel_nop_alloc_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
- GLenum internalFormat, GLuint width, GLuint height)
-{
- _mesa_problem(ctx, "intel_op_alloc_storage should never be called.");
- return GL_FALSE;
-}
-
-
-
-/**
- * Create a new intel_renderbuffer which corresponds to an on-screen window,
- * not a user-created renderbuffer.
- * \param width the screen width
- * \param height the screen height
- */
-struct intel_renderbuffer *
-intel_create_renderbuffer(GLenum intFormat, GLsizei width, GLsizei height,
- int offset, int pitch, int cpp, void *map)
-{
- GET_CURRENT_CONTEXT(ctx);
-
- struct intel_renderbuffer *irb;
- const GLuint name = 0;
-
- irb = CALLOC_STRUCT(intel_renderbuffer);
- if (!irb) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "creating renderbuffer");
- return NULL;
- }
-
- _mesa_init_renderbuffer(&irb->Base, name);
- irb->Base.ClassID = INTEL_RB_CLASS;
-
- switch (intFormat) {
- case GL_RGB5:
- irb->Base._ActualFormat = GL_RGB5;
- irb->Base._BaseFormat = GL_RGBA;
- irb->Base.RedBits = 5;
- irb->Base.GreenBits = 6;
- irb->Base.BlueBits = 5;
- irb->Base.DataType = GL_UNSIGNED_BYTE;
- cpp = 2;
- break;
- case GL_RGBA8:
- irb->Base._ActualFormat = GL_RGBA8;
- irb->Base._BaseFormat = GL_RGBA;
- irb->Base.RedBits = 8;
- irb->Base.GreenBits = 8;
- irb->Base.BlueBits = 8;
- irb->Base.AlphaBits = 8;
- irb->Base.DataType = GL_UNSIGNED_BYTE;
- cpp = 4;
- break;
- case GL_STENCIL_INDEX8_EXT:
- irb->Base._ActualFormat = GL_STENCIL_INDEX8_EXT;
- irb->Base._BaseFormat = GL_STENCIL_INDEX;
- irb->Base.StencilBits = 8;
- irb->Base.DataType = GL_UNSIGNED_BYTE;
- cpp = 1;
- break;
- case GL_DEPTH_COMPONENT16:
- irb->Base._ActualFormat = GL_DEPTH_COMPONENT16;
- irb->Base._BaseFormat = GL_DEPTH_COMPONENT;
- irb->Base.DepthBits = 16;
- irb->Base.DataType = GL_UNSIGNED_SHORT;
- cpp = 2;
- break;
- case GL_DEPTH_COMPONENT24:
- irb->Base._ActualFormat = GL_DEPTH24_STENCIL8_EXT;
- irb->Base._BaseFormat = GL_DEPTH_COMPONENT;
- irb->Base.DepthBits = 24;
- irb->Base.DataType = GL_UNSIGNED_INT;
- cpp = 4;
- break;
- case GL_DEPTH24_STENCIL8_EXT:
- irb->Base._ActualFormat = GL_DEPTH24_STENCIL8_EXT;
- irb->Base._BaseFormat = GL_DEPTH_STENCIL_EXT;
- irb->Base.DepthBits = 24;
- irb->Base.StencilBits = 8;
- irb->Base.DataType = GL_UNSIGNED_INT_24_8_EXT;
- cpp = 4;
- break;
- default:
- _mesa_problem(NULL,
- "Unexpected intFormat in intel_create_renderbuffer");
- return NULL;
- }
-
- irb->Base.InternalFormat = intFormat;
-
- /* intel-specific methods */
- irb->Base.Delete = intel_delete_renderbuffer;
- irb->Base.AllocStorage = intel_alloc_window_storage;
- irb->Base.GetPointer = intel_get_pointer;
- /* This sets the Get/PutRow/Value functions */
- intel_set_span_functions(&irb->Base);
-
- irb->pfMap = map;
- irb->pfPitch = pitch / cpp; /* in pixels */
-
-#if 00
- irb->region = intel_region_create_static(intel,
- DRM_MM_TT,
- offset, map, cpp, width, height);
-#endif
-
- return irb;
-}
-
-
-/**
- * Create a new renderbuffer object.
- * Typically called via glBindRenderbufferEXT().
- */
-static struct gl_renderbuffer *
-intel_new_renderbuffer(GLcontext * ctx, GLuint name)
-{
- /*struct intel_context *intel = intel_context(ctx); */
- struct intel_renderbuffer *irb;
-
- irb = CALLOC_STRUCT(intel_renderbuffer);
- if (!irb) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "creating renderbuffer");
- return NULL;
- }
-
- _mesa_init_renderbuffer(&irb->Base, name);
- irb->Base.ClassID = INTEL_RB_CLASS;
-
- /* intel-specific methods */
- irb->Base.Delete = intel_delete_renderbuffer;
- irb->Base.AllocStorage = intel_alloc_renderbuffer_storage;
- irb->Base.GetPointer = intel_get_pointer;
- /* span routines set in alloc_storage function */
-
- return &irb->Base;
-}
-
-
-/**
- * Called via glBindFramebufferEXT().
- */
-static void
-intel_bind_framebuffer(GLcontext * ctx, GLenum target,
- struct gl_framebuffer *fb, struct gl_framebuffer *fbread)
-{
- if (target == GL_FRAMEBUFFER_EXT || target == GL_DRAW_FRAMEBUFFER_EXT) {
- intel_draw_buffer(ctx, fb);
- /* Integer depth range depends on depth buffer bits */
- ctx->Driver.DepthRange(ctx, ctx->Viewport.Near, ctx->Viewport.Far);
- }
- else {
- /* don't need to do anything if target == GL_READ_FRAMEBUFFER_EXT */
- }
-}
-
-
-/**
- * Called via glFramebufferRenderbufferEXT().
- */
-static void
-intel_framebuffer_renderbuffer(GLcontext * ctx,
- struct gl_framebuffer *fb,
- GLenum attachment, struct gl_renderbuffer *rb)
-{
- DBG("Intel FramebufferRenderbuffer %u %u\n", fb->Name, rb ? rb->Name : 0);
-
- intelFlush(ctx);
-
- _mesa_framebuffer_renderbuffer(ctx, fb, attachment, rb);
- intel_draw_buffer(ctx, fb);
-}
-
-
-/**
- * When glFramebufferTexture[123]D is called this function sets up the
- * gl_renderbuffer wrapper around the texture image.
- * This will have the region info needed for hardware rendering.
- */
-static struct intel_renderbuffer *
-intel_wrap_texture(GLcontext * ctx, struct gl_texture_image *texImage)
-{
- const GLuint name = ~0; /* not significant, but distinct for debugging */
- struct intel_renderbuffer *irb;
-
- /* make an intel_renderbuffer to wrap the texture image */
- irb = CALLOC_STRUCT(intel_renderbuffer);
- if (!irb) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glFramebufferTexture");
- return NULL;
- }
-
- _mesa_init_renderbuffer(&irb->Base, name);
- irb->Base.ClassID = INTEL_RB_CLASS;
-
- if (texImage->TexFormat == &_mesa_texformat_argb8888) {
- irb->Base._ActualFormat = GL_RGBA8;
- irb->Base._BaseFormat = GL_RGBA;
- DBG("Render to RGBA8 texture OK\n");
- }
- else if (texImage->TexFormat == &_mesa_texformat_rgb565) {
- irb->Base._ActualFormat = GL_RGB5;
- irb->Base._BaseFormat = GL_RGB;
- DBG("Render to RGB5 texture OK\n");
- }
- else if (texImage->TexFormat == &_mesa_texformat_z16) {
- irb->Base._ActualFormat = GL_DEPTH_COMPONENT16;
- irb->Base._BaseFormat = GL_DEPTH_COMPONENT;
- DBG("Render to DEPTH16 texture OK\n");
- }
- else {
- DBG("Render to texture BAD FORMAT %d\n",
- texImage->TexFormat->MesaFormat);
- _mesa_free(irb);
- return NULL;
- }
-
- irb->Base.InternalFormat = irb->Base._ActualFormat;
- irb->Base.Width = texImage->Width;
- irb->Base.Height = texImage->Height;
- irb->Base.DataType = GL_UNSIGNED_BYTE; /* FBO XXX fix */
- irb->Base.RedBits = texImage->TexFormat->RedBits;
- irb->Base.GreenBits = texImage->TexFormat->GreenBits;
- irb->Base.BlueBits = texImage->TexFormat->BlueBits;
- irb->Base.AlphaBits = texImage->TexFormat->AlphaBits;
- irb->Base.DepthBits = texImage->TexFormat->DepthBits;
-
- irb->Base.Delete = intel_delete_renderbuffer;
- irb->Base.AllocStorage = intel_nop_alloc_storage;
- intel_set_span_functions(&irb->Base);
-
- irb->RenderToTexture = GL_TRUE;
-
- return irb;
-}
-
-
-/**
- * Called by glFramebufferTexture[123]DEXT() (and other places) to
- * prepare for rendering into texture memory. This might be called
- * many times to choose different texture levels, cube faces, etc
- * before intel_finish_render_texture() is ever called.
- */
-static void
-intel_render_texture(GLcontext * ctx,
- struct gl_framebuffer *fb,
- struct gl_renderbuffer_attachment *att)
-{
- struct gl_texture_image *newImage
- = att->Texture->Image[att->CubeMapFace][att->TextureLevel];
- struct intel_renderbuffer *irb = intel_renderbuffer(att->Renderbuffer);
- struct intel_texture_image *intel_image;
- GLuint imageOffset;
-
- (void) fb;
-
- ASSERT(newImage);
-
- if (!irb) {
- irb = intel_wrap_texture(ctx, newImage);
- if (irb) {
- /* bind the wrapper to the attachment point */
- _mesa_reference_renderbuffer(&att->Renderbuffer, &irb->Base);
- }
- else {
- /* fallback to software rendering */
- _mesa_render_texture(ctx, fb, att);
- return;
- }
- }
-
- DBG("Begin render texture tid %x tex=%u w=%d h=%d refcount=%d\n",
- _glthread_GetID(),
- att->Texture->Name, newImage->Width, newImage->Height,
- irb->Base.RefCount);
-
- /* point the renderbufer's region to the texture image region */
- intel_image = intel_texture_image(newImage);
- if (irb->region != intel_image->mt->region) {
- if (irb->region)
- intel_region_release(&irb->region);
- intel_region_reference(&irb->region, intel_image->mt->region);
- }
-
- /* compute offset of the particular 2D image within the texture region */
- imageOffset = intel_miptree_image_offset(intel_image->mt,
- att->CubeMapFace,
- att->TextureLevel);
-
- if (att->Texture->Target == GL_TEXTURE_3D) {
- const GLuint *offsets = intel_miptree_depth_offsets(intel_image->mt,
- att->TextureLevel);
- imageOffset += offsets[att->Zoffset];
- }
-
- /* store that offset in the region */
- intel_image->mt->region->draw_offset = imageOffset;
-
- /* update drawing region, etc */
- intel_draw_buffer(ctx, fb);
-}
-
-
-/**
- * Called by Mesa when rendering to a texture is done.
- */
-static void
-intel_finish_render_texture(GLcontext * ctx,
- struct gl_renderbuffer_attachment *att)
-{
- struct intel_renderbuffer *irb = intel_renderbuffer(att->Renderbuffer);
-
- DBG("End render texture (tid %x) tex %u\n", _glthread_GetID(), att->Texture->Name);
-
- if (irb) {
- /* just release the region */
- intel_region_release(&irb->region);
- }
- else if (att->Renderbuffer) {
- /* software fallback */
- _mesa_finish_render_texture(ctx, att);
- /* XXX FBO: Need to unmap the buffer (or in intelSpanRenderStart???) */
- }
-}
-
-
-/**
- * Do one-time context initializations related to GL_EXT_framebuffer_object.
- * Hook in device driver functions.
- */
-void
-intel_fbo_init(struct intel_context *intel)
-{
- intel->ctx.Driver.NewFramebuffer = intel_new_framebuffer;
- intel->ctx.Driver.NewRenderbuffer = intel_new_renderbuffer;
- intel->ctx.Driver.BindFramebuffer = intel_bind_framebuffer;
- intel->ctx.Driver.FramebufferRenderbuffer = intel_framebuffer_renderbuffer;
- intel->ctx.Driver.RenderTexture = intel_render_texture;
- intel->ctx.Driver.FinishRenderTexture = intel_finish_render_texture;
- intel->ctx.Driver.ResizeBuffers = intel_resize_buffers;
-}
projects / mesa.git / blobdiff