| /************************************************************************** |
| * |
| * Copyright 2003 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 "glheader.h" |
| #include "enums.h" |
| #include "mtypes.h" |
| #include "macros.h" |
| #include "image.h" |
| #include "bufferobj.h" |
| #include "swrast/swrast.h" |
| |
| #include "intel_screen.h" |
| #include "intel_context.h" |
| #include "intel_ioctl.h" |
| #include "intel_batchbuffer.h" |
| #include "intel_blit.h" |
| #include "intel_buffers.h" |
| #include "intel_regions.h" |
| #include "intel_pixel.h" |
| #include "intel_buffer_objects.h" |
| |
| /* For many applications, the new ability to pull the source buffers |
| * back out of the GTT and then do the packing/conversion operations |
| * in software will be as much of an improvement as trying to get the |
| * blitter and/or texture engine to do the work. |
| * |
| * This step is gated on private backbuffers. |
| * |
| * Obviously the frontbuffer can't be pulled back, so that is either |
| * an argument for blit/texture readpixels, or for blitting to a |
| * temporary and then pulling that back. |
| * |
| * When the destination is a pbo, however, it's not clear if it is |
| * ever going to be pulled to main memory (though the access param |
| * will be a good hint). So it sounds like we do want to be able to |
| * choose between blit/texture implementation on the gpu and pullback |
| * and cpu-based copying. |
| * |
| * Unless you can magically turn client memory into a PBO for the |
| * duration of this call, there will be a cpu-based copying step in |
| * any case. |
| */ |
| |
| |
| static GLboolean |
| do_texture_readpixels(GLcontext * ctx, |
| GLint x, GLint y, GLsizei width, GLsizei height, |
| GLenum format, GLenum type, |
| const struct gl_pixelstore_attrib *pack, |
| struct intel_region *dest_region) |
| { |
| #if 0 |
| struct intel_context *intel = intel_context(ctx); |
| intelScreenPrivate *screen = intel->intelScreen; |
| GLint pitch = pack->RowLength ? pack->RowLength : width; |
| __DRIdrawablePrivate *dPriv = intel->driDrawable; |
| int textureFormat; |
| GLenum glTextureFormat; |
| int destFormat, depthFormat, destPitch; |
| drm_clip_rect_t tmp; |
| |
| if (INTEL_DEBUG & DEBUG_PIXEL) |
| fprintf(stderr, "%s\n", __FUNCTION__); |
| |
| |
| if (ctx->_ImageTransferState || |
| pack->SwapBytes || pack->LsbFirst || !pack->Invert) { |
| if (INTEL_DEBUG & DEBUG_PIXEL) |
| fprintf(stderr, "%s: check_color failed\n", __FUNCTION__); |
| return GL_FALSE; |
| } |
| |
| intel->vtbl.meta_texrect_source(intel, intel_readbuf_region(intel)); |
| |
| if (!intel->vtbl.meta_render_dest(intel, dest_region, type, format)) { |
| if (INTEL_DEBUG & DEBUG_PIXEL) |
| fprintf(stderr, "%s: couldn't set dest %s/%s\n", |
| __FUNCTION__, |
| _mesa_lookup_enum_by_nr(type), |
| _mesa_lookup_enum_by_nr(format)); |
| return GL_FALSE; |
| } |
| |
| LOCK_HARDWARE(intel); |
| |
| if (intel->driDrawable->numClipRects) { |
| intel->vtbl.install_meta_state(intel); |
| intel->vtbl.meta_no_depth_write(intel); |
| intel->vtbl.meta_no_stencil_write(intel); |
| |
| if (!driClipRectToFramebuffer(ctx->ReadBuffer, &x, &y, &width, &height)) { |
| UNLOCK_HARDWARE(intel); |
| SET_STATE(i830, state); |
| if (INTEL_DEBUG & DEBUG_PIXEL) |
| fprintf(stderr, "%s: cliprect failed\n", __FUNCTION__); |
| return GL_TRUE; |
| } |
| |
| y = dPriv->h - y - height; |
| x += dPriv->x; |
| y += dPriv->y; |
| |
| |
| /* Set the frontbuffer up as a large rectangular texture. |
| */ |
| intel->vtbl.meta_tex_rect_source(intel, src_region, textureFormat); |
| |
| |
| intel->vtbl.meta_texture_blend_replace(i830, glTextureFormat); |
| |
| |
| /* Set the 3d engine to draw into the destination region: |
| */ |
| |
| intel->vtbl.meta_draw_region(intel, dest_region); |
| intel->vtbl.meta_draw_format(intel, destFormat, depthFormat); /* ?? */ |
| |
| |
| /* Draw a single quad, no cliprects: |
| */ |
| intel->vtbl.meta_disable_cliprects(intel); |
| |
| intel->vtbl.draw_quad(intel, |
| 0, width, 0, height, |
| 0x00ff00ff, x, x + width, y, y + height); |
| |
| intel->vtbl.leave_meta_state(intel); |
| } |
| UNLOCK_HARDWARE(intel); |
| |
| intel_region_wait_fence(ctx, dest_region); /* required by GL */ |
| return GL_TRUE; |
| #endif |
| |
| return GL_FALSE; |
| } |
| |
| |
| |
| |
| static GLboolean |
| do_blit_readpixels(GLcontext * ctx, |
| GLint x, GLint y, GLsizei width, GLsizei height, |
| GLenum format, GLenum type, |
| const struct gl_pixelstore_attrib *pack, GLvoid * pixels) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| struct intel_region *src = intel_readbuf_region(intel); |
| struct intel_buffer_object *dst = intel_buffer_object(pack->BufferObj); |
| GLuint dst_offset; |
| GLuint rowLength; |
| dri_fence *fence = NULL; |
| |
| if (INTEL_DEBUG & DEBUG_PIXEL) |
| _mesa_printf("%s\n", __FUNCTION__); |
| |
| if (!src) |
| return GL_FALSE; |
| |
| if (dst) { |
| /* XXX This validation should be done by core mesa: |
| */ |
| if (!_mesa_validate_pbo_access(2, pack, width, height, 1, |
| format, type, pixels)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, "glDrawPixels"); |
| return GL_TRUE; |
| } |
| } |
| else { |
| /* PBO only for now: |
| */ |
| if (INTEL_DEBUG & DEBUG_PIXEL) |
| _mesa_printf("%s - not PBO\n", __FUNCTION__); |
| return GL_FALSE; |
| } |
| |
| |
| if (ctx->_ImageTransferState || |
| !intel_check_blit_format(src, format, type)) { |
| if (INTEL_DEBUG & DEBUG_PIXEL) |
| _mesa_printf("%s - bad format for blit\n", __FUNCTION__); |
| return GL_FALSE; |
| } |
| |
| if (pack->Alignment != 1 || pack->SwapBytes || pack->LsbFirst) { |
| if (INTEL_DEBUG & DEBUG_PIXEL) |
| _mesa_printf("%s: bad packing params\n", __FUNCTION__); |
| return GL_FALSE; |
| } |
| |
| if (pack->RowLength > 0) |
| rowLength = pack->RowLength; |
| else |
| rowLength = width; |
| |
| if (pack->Invert) { |
| if (INTEL_DEBUG & DEBUG_PIXEL) |
| _mesa_printf("%s: MESA_PACK_INVERT not done yet\n", __FUNCTION__); |
| return GL_FALSE; |
| } |
| else { |
| rowLength = -rowLength; |
| } |
| |
| /* XXX 64-bit cast? */ |
| dst_offset = (GLuint) _mesa_image_address(2, pack, pixels, width, height, |
| format, type, 0, 0, 0); |
| |
| |
| /* Although the blits go on the command buffer, need to do this and |
| * fire with lock held to guarentee cliprects are correct. |
| */ |
| intelFlush(&intel->ctx); |
| LOCK_HARDWARE(intel); |
| |
| if (intel->driDrawable->numClipRects) { |
| GLboolean all = (width * height * src->cpp == dst->Base.Size && |
| x == 0 && dst_offset == 0); |
| |
| dri_bo *dst_buffer = intel_bufferobj_buffer(intel, dst, |
| all ? INTEL_WRITE_FULL : |
| INTEL_WRITE_PART); |
| __DRIdrawablePrivate *dPriv = intel->driDrawable; |
| int nbox = dPriv->numClipRects; |
| drm_clip_rect_t *box = dPriv->pClipRects; |
| drm_clip_rect_t rect; |
| drm_clip_rect_t src_rect; |
| int i; |
| |
| src_rect.x1 = dPriv->x + x; |
| src_rect.y1 = dPriv->y + dPriv->h - (y + height); |
| src_rect.x2 = src_rect.x1 + width; |
| src_rect.y2 = src_rect.y1 + height; |
| |
| |
| |
| for (i = 0; i < nbox; i++) { |
| if (!intel_intersect_cliprects(&rect, &src_rect, &box[i])) |
| continue; |
| |
| intelEmitCopyBlit(intel, |
| src->cpp, |
| src->pitch, src->buffer, 0, src->tiled, |
| rowLength, dst_buffer, dst_offset, GL_FALSE, |
| rect.x1, |
| rect.y1, |
| rect.x1 - src_rect.x1, |
| rect.y2 - src_rect.y2, |
| rect.x2 - rect.x1, rect.y2 - rect.y1, |
| GL_COPY); |
| } |
| |
| intel_batchbuffer_flush(intel->batch); |
| fence = intel->batch->last_fence; |
| dri_fence_reference(fence); |
| |
| } |
| UNLOCK_HARDWARE(intel); |
| |
| if (fence) { |
| dri_fence_wait(fence); |
| dri_fence_unreference(fence); |
| } |
| |
| if (INTEL_DEBUG & DEBUG_PIXEL) |
| _mesa_printf("%s - DONE\n", __FUNCTION__); |
| |
| return GL_TRUE; |
| } |
| |
| void |
| intelReadPixels(GLcontext * ctx, |
| GLint x, GLint y, GLsizei width, GLsizei height, |
| GLenum format, GLenum type, |
| const struct gl_pixelstore_attrib *pack, GLvoid * pixels) |
| { |
| if (INTEL_DEBUG & DEBUG_PIXEL) |
| fprintf(stderr, "%s\n", __FUNCTION__); |
| |
| intelFlush(ctx); |
| |
| if (do_blit_readpixels |
| (ctx, x, y, width, height, format, type, pack, pixels)) |
| return; |
| |
| if (do_texture_readpixels |
| (ctx, x, y, width, height, format, type, pack, pixels)) |
| return; |
| |
| if (INTEL_DEBUG & DEBUG_PIXEL) |
| _mesa_printf("%s: fallback to swrast\n", __FUNCTION__); |
| |
| _swrast_ReadPixels(ctx, x, y, width, height, format, type, pack, pixels); |
| } |
