+++ /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.
- *
- **************************************************************************/
-
-/* Provide additional functionality on top of bufmgr buffers:
- * - 2d semantics and blit operations
- * - refcounting of buffers for multiple images in a buffer.
- * - refcounting of buffer mappings.
- * - some logic for moving the buffers to the best memory pools for
- * given operations.
- *
- * Most of this is to make it easier to implement the fixed-layout
- * mipmap tree required by intel hardware in the face of GL's
- * programming interface where each image can be specifed in random
- * order and it isn't clear what layout the tree should have until the
- * last moment.
- */
-
-#include "intel_context.h"
-#include "intel_regions.h"
-#include "intel_blit.h"
-#include "intel_buffer_objects.h"
-#include "dri_bufmgr.h"
-#include "intel_batchbuffer.h"
-
-#define FILE_DEBUG_FLAG DEBUG_REGION
-
-void
-intel_region_idle(intelScreenPrivate *intelScreen, struct intel_region *region)
-{
- DBG("%s\n", __FUNCTION__);
- /* XXX: Using this function is likely bogus -- it ought to only have been
- * used before a map, anyway, but leave this cheap implementation of it
- * for now.
- */
- if (region && region->buffer) {
- /* Mapping it for read will ensure that any acceleration to the region
- * would have landed already.
- */
- dri_bo_map(region->buffer, GL_TRUE);
- dri_bo_unmap(region->buffer);
- }
-}
-
-/* XXX: Thread safety?
- */
-GLubyte *
-intel_region_map(intelScreenPrivate *intelScreen, struct intel_region *region)
-{
- DBG("%s\n", __FUNCTION__);
- if (!region->map_refcount++) {
- if (region->pbo)
- intel_region_cow(intelScreen, region);
-
- dri_bo_map(region->buffer, GL_TRUE);
- region->map = region->buffer->virtual;
- }
-
- return region->map;
-}
-
-void
-intel_region_unmap(intelScreenPrivate *intelScreen, struct intel_region *region)
-{
- DBG("%s\n", __FUNCTION__);
- if (!--region->map_refcount) {
- dri_bo_unmap(region->buffer);
- region->map = NULL;
- }
-}
-
-struct intel_region *
-intel_region_alloc(intelScreenPrivate *intelScreen,
- GLuint cpp, GLuint pitch, GLuint height)
-{
- struct intel_region *region = calloc(sizeof(*region), 1);
-
- DBG("%s\n", __FUNCTION__);
-
- region->cpp = cpp;
- region->pitch = pitch;
- region->height = height; /* needed? */
- region->refcount = 1;
-
- region->buffer = dri_bo_alloc(intelScreen->bufmgr, "region",
- pitch * cpp * height, 64, DRM_BO_FLAG_MEM_TT);
- return region;
-}
-
-void
-intel_region_reference(struct intel_region **dst, struct intel_region *src)
-{
- assert(*dst == NULL);
- if (src) {
- src->refcount++;
- *dst = src;
- }
-}
-
-void
-intel_region_release(struct intel_region **region)
-{
- if (!*region)
- return;
-
- DBG("%s %d\n", __FUNCTION__, (*region)->refcount - 1);
-
- ASSERT((*region)->refcount > 0);
- (*region)->refcount--;
-
- if ((*region)->refcount == 0) {
- assert((*region)->map_refcount == 0);
-
- if ((*region)->pbo)
- (*region)->pbo->region = NULL;
- (*region)->pbo = NULL;
- dri_bo_unreference((*region)->buffer);
- free(*region);
- }
- *region = NULL;
-}
-
-
-struct intel_region *
-intel_region_create_static(intelScreenPrivate *intelScreen,
- GLuint mem_type,
- unsigned int bo_handle,
- GLuint offset,
- void *virtual,
- GLuint cpp, GLuint pitch, GLuint height)
-{
- struct intel_region *region = calloc(sizeof(*region), 1);
- DBG("%s\n", __FUNCTION__);
-
- region->cpp = cpp;
- region->pitch = pitch;
- region->height = height; /* needed? */
- region->refcount = 1;
-
- if (intelScreen->ttm) {
- assert(bo_handle != -1);
- region->buffer = intel_ttm_bo_create_from_handle(intelScreen->bufmgr,
- "static region",
- bo_handle);
- } else {
- region->buffer = dri_bo_alloc_static(intelScreen->bufmgr,
- "static region",
- offset, pitch * cpp * height,
- virtual,
- DRM_BO_FLAG_MEM_TT);
- }
-
- return region;
-}
-
-
-
-void
-intel_region_update_static(intelScreenPrivate *intelScreen,
- struct intel_region *region,
- GLuint mem_type,
- unsigned int bo_handle,
- GLuint offset,
- void *virtual,
- GLuint cpp, GLuint pitch, GLuint height)
-{
- DBG("%s\n", __FUNCTION__);
-
- region->cpp = cpp;
- region->pitch = pitch;
- region->height = height; /* needed? */
-
- /*
- * We use a "shared" buffer type to indicate buffers created and
- * shared by others.
- */
-
- dri_bo_unreference(region->buffer);
- if (intelScreen->ttm) {
- assert(bo_handle != -1);
- region->buffer = intel_ttm_bo_create_from_handle(intelScreen->bufmgr,
- "static region",
- bo_handle);
- } else {
- region->buffer = dri_bo_alloc_static(intelScreen->bufmgr,
- "static region",
- offset, pitch * cpp * height,
- virtual,
- DRM_BO_FLAG_MEM_TT);
- }
-}
-
-
-
-/*
- * XXX Move this into core Mesa?
- */
-static void
-_mesa_copy_rect(GLubyte * dst,
- GLuint cpp,
- GLuint dst_pitch,
- GLuint dst_x,
- GLuint dst_y,
- GLuint width,
- GLuint height,
- const GLubyte * src,
- GLuint src_pitch, GLuint src_x, GLuint src_y)
-{
- GLuint i;
-
- dst_pitch *= cpp;
- src_pitch *= cpp;
- dst += dst_x * cpp;
- src += src_x * cpp;
- dst += dst_y * dst_pitch;
- src += src_y * dst_pitch;
- width *= cpp;
-
- if (width == dst_pitch && width == src_pitch)
- memcpy(dst, src, height * width);
- else {
- for (i = 0; i < height; i++) {
- memcpy(dst, src, width);
- dst += dst_pitch;
- src += src_pitch;
- }
- }
-}
-
-
-/* Upload data to a rectangular sub-region. Lots of choices how to do this:
- *
- * - memcpy by span to current destination
- * - upload data as new buffer and blit
- *
- * Currently always memcpy.
- */
-void
-intel_region_data(intelScreenPrivate *intelScreen,
- struct intel_region *dst,
- GLuint dst_offset,
- GLuint dstx, GLuint dsty,
- const void *src, GLuint src_pitch,
- GLuint srcx, GLuint srcy, GLuint width, GLuint height)
-{
- struct intel_context *intel = intelScreenContext(intelScreen);
-
- DBG("%s\n", __FUNCTION__);
-
- if (intel == NULL)
- return;
-
- if (dst->pbo) {
- if (dstx == 0 &&
- dsty == 0 && width == dst->pitch && height == dst->height)
- intel_region_release_pbo(intelScreen, dst);
- else
- intel_region_cow(intelScreen, dst);
- }
-
-
- LOCK_HARDWARE(intel);
-
- _mesa_copy_rect(intel_region_map(intelScreen, dst) + dst_offset,
- dst->cpp,
- dst->pitch,
- dstx, dsty, width, height, src, src_pitch, srcx, srcy);
-
- intel_region_unmap(intelScreen, dst);
-
- UNLOCK_HARDWARE(intel);
-
-}
-
-/* Copy rectangular sub-regions. Need better logic about when to
- * push buffers into AGP - will currently do so whenever possible.
- */
-void
-intel_region_copy(intelScreenPrivate *intelScreen,
- struct intel_region *dst,
- GLuint dst_offset,
- GLuint dstx, GLuint dsty,
- struct intel_region *src,
- GLuint src_offset,
- GLuint srcx, GLuint srcy, GLuint width, GLuint height)
-{
- struct intel_context *intel = intelScreenContext(intelScreen);
-
- DBG("%s\n", __FUNCTION__);
-
- if (intel == NULL)
- return;
-
- if (dst->pbo) {
- if (dstx == 0 &&
- dsty == 0 && width == dst->pitch && height == dst->height)
- intel_region_release_pbo(intelScreen, dst);
- else
- intel_region_cow(intelScreen, dst);
- }
-
- assert(src->cpp == dst->cpp);
-
- intelEmitCopyBlit(intel,
- dst->cpp,
- src->pitch, src->buffer, src_offset,
- dst->pitch, dst->buffer, dst_offset,
- srcx, srcy, dstx, dsty, width, height,
- GL_COPY);
-}
-
-/* Fill a rectangular sub-region. Need better logic about when to
- * push buffers into AGP - will currently do so whenever possible.
- */
-void
-intel_region_fill(intelScreenPrivate *intelScreen,
- struct intel_region *dst,
- GLuint dst_offset,
- GLuint dstx, GLuint dsty,
- GLuint width, GLuint height, GLuint color)
-{
- struct intel_context *intel = intelScreenContext(intelScreen);
-
- DBG("%s\n", __FUNCTION__);
-
- if (intel == NULL)
- return;
-
- if (dst->pbo) {
- if (dstx == 0 &&
- dsty == 0 && width == dst->pitch && height == dst->height)
- intel_region_release_pbo(intelScreen, dst);
- else
- intel_region_cow(intelScreen, dst);
- }
-
- intelEmitFillBlit(intel,
- dst->cpp,
- dst->pitch, dst->buffer, dst_offset,
- dstx, dsty, width, height, color);
-}
-
-/* Attach to a pbo, discarding our data. Effectively zero-copy upload
- * the pbo's data.
- */
-void
-intel_region_attach_pbo(intelScreenPrivate *intelScreen,
- struct intel_region *region,
- struct intel_buffer_object *pbo)
-{
- if (region->pbo == pbo)
- return;
-
- /* If there is already a pbo attached, break the cow tie now.
- * Don't call intel_region_release_pbo() as that would
- * unnecessarily allocate a new buffer we would have to immediately
- * discard.
- */
- if (region->pbo) {
- region->pbo->region = NULL;
- region->pbo = NULL;
- }
-
- if (region->buffer) {
- dri_bo_unreference(region->buffer);
- region->buffer = NULL;
- }
-
- region->pbo = pbo;
- region->pbo->region = region;
- dri_bo_reference(pbo->buffer);
- region->buffer = pbo->buffer;
-}
-
-
-/* Break the COW tie to the pbo and allocate a new buffer.
- * The pbo gets to keep the data.
- */
-void
-intel_region_release_pbo(intelScreenPrivate *intelScreen,
- struct intel_region *region)
-{
- assert(region->buffer == region->pbo->buffer);
- region->pbo->region = NULL;
- region->pbo = NULL;
- dri_bo_unreference(region->buffer);
- region->buffer = NULL;
-
- region->buffer = dri_bo_alloc(intelScreen->bufmgr, "region",
- region->pitch * region->cpp * region->height,
- 64, DRM_BO_FLAG_MEM_TT);
-}
-
-/* Break the COW tie to the pbo. Both the pbo and the region end up
- * with a copy of the data.
- */
-void
-intel_region_cow(intelScreenPrivate *intelScreen, struct intel_region *region)
-{
- struct intel_context *intel = intelScreenContext(intelScreen);
- struct intel_buffer_object *pbo = region->pbo;
-
- if (intel == NULL)
- return;
-
- intel_region_release_pbo(intelScreen, region);
-
- assert(region->cpp * region->pitch * region->height == pbo->Base.Size);
-
- DBG("%s (%d bytes)\n", __FUNCTION__, pbo->Base.Size);
-
- /* Now blit from the texture buffer to the new buffer:
- */
-
- intel_batchbuffer_flush(intel->batch);
-
- if (!intel->locked) {
- LOCK_HARDWARE(intel);
- intelEmitCopyBlit(intel,
- region->cpp,
- region->pitch,
- region->buffer, 0,
- region->pitch,
- pbo->buffer, 0,
- 0, 0, 0, 0,
- region->pitch, region->height,
- GL_COPY);
-
- intel_batchbuffer_flush(intel->batch);
- UNLOCK_HARDWARE(intel);
- }
- else {
- intelEmitCopyBlit(intel,
- region->cpp,
- region->pitch,
- region->buffer, 0,
- region->pitch,
- pbo->buffer, 0,
- 0, 0, 0, 0,
- region->pitch, region->height,
- GL_COPY);
-
- intel_batchbuffer_flush(intel->batch);
- }
-}
-
-dri_bo *
-intel_region_buffer(intelScreenPrivate *intelScreen,
- struct intel_region *region, GLuint flag)
-{
- if (region->pbo) {
- if (flag == INTEL_WRITE_PART)
- intel_region_cow(intelScreen, region);
- else if (flag == INTEL_WRITE_FULL)
- intel_region_release_pbo(intelScreen, region);
- }
-
- return region->buffer;
-}
projects / mesa.git / blobdiff