| /************************************************************************** |
| * |
| * 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_bufmgr_ttm.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, |
| const char *name, |
| 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, |
| name, |
| bo_handle); |
| } else { |
| region->buffer = dri_bo_alloc_static(intelScreen->bufmgr, |
| name, |
| offset, pitch * cpp * height, |
| virtual, |
| DRM_BO_FLAG_MEM_TT); |
| } |
| |
| return region; |
| } |
| |
| |
| |
| void |
| intel_region_update_static(intelScreenPrivate *intelScreen, |
| struct intel_region *region, |
| const char *name, |
| 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, |
| name, |
| bo_handle); |
| } else { |
| region->buffer = dri_bo_alloc_static(intelScreen->bufmgr, |
| name, |
| 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; |
| } |