diff options
Diffstat (limited to 'src/mesa/drivers/dri/i915/intel_regions.c')
| -rw-r--r-- | src/mesa/drivers/dri/i915/intel_regions.c | 482 |
1 files changed, 482 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i915/intel_regions.c b/src/mesa/drivers/dri/i915/intel_regions.c new file mode 100644 index 00000000000..4eac859a133 --- /dev/null +++ b/src/mesa/drivers/dri/i915/intel_regions.c @@ -0,0 +1,482 @@ +/************************************************************************** + * + * 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 = dri_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 = dri_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; +} |