| /************************************************************************** |
| * |
| * 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 "image.h" |
| #include "state.h" |
| #include "mtypes.h" |
| #include "macros.h" |
| #include "swrast/swrast.h" |
| |
| #include "intel_screen.h" |
| #include "intel_context.h" |
| #include "intel_ioctl.h" |
| #include "intel_batchbuffer.h" |
| #include "intel_buffers.h" |
| #include "intel_blit.h" |
| #include "intel_regions.h" |
| #include "intel_pixel.h" |
| |
| #define FILE_DEBUG_FLAG DEBUG_PIXEL |
| |
| static struct intel_region * |
| copypix_src_region(struct intel_context *intel, GLenum type) |
| { |
| switch (type) { |
| case GL_COLOR: |
| return intel_readbuf_region(intel); |
| case GL_DEPTH: |
| /* Don't think this is really possible execpt at 16bpp, when we have no stencil. |
| */ |
| if (intel->depth_region && intel->depth_region->cpp == 2) |
| return intel->depth_region; |
| case GL_STENCIL: |
| /* Don't think this is really possible. |
| */ |
| break; |
| case GL_DEPTH_STENCIL_EXT: |
| /* Does it matter whether it is stencil/depth or depth/stencil? |
| */ |
| return intel->depth_region; |
| default: |
| break; |
| } |
| |
| return NULL; |
| } |
| |
| |
| /** |
| * Check if any fragment operations are in effect which might effect |
| * glCopyPixels. Differs from intel_check_blit_fragment_ops in that |
| * we allow Scissor. |
| */ |
| static GLboolean |
| intel_check_copypixel_blit_fragment_ops(GLcontext * ctx) |
| { |
| if (ctx->NewState) |
| _mesa_update_state(ctx); |
| |
| /* Could do logicop with the blitter: |
| */ |
| return !(ctx->_ImageTransferState || |
| ctx->Color.AlphaEnabled || |
| ctx->Depth.Test || |
| ctx->Fog.Enabled || |
| ctx->Stencil.Enabled || |
| !ctx->Color.ColorMask[0] || |
| !ctx->Color.ColorMask[1] || |
| !ctx->Color.ColorMask[2] || |
| !ctx->Color.ColorMask[3] || |
| ctx->Texture._EnabledUnits || |
| ctx->FragmentProgram._Enabled || |
| ctx->Color.BlendEnabled); |
| } |
| |
| #ifdef I915 |
| /* Doesn't work for overlapping regions. Could do a double copy or |
| * just fallback. |
| */ |
| static GLboolean |
| do_texture_copypixels(GLcontext * ctx, |
| GLint srcx, GLint srcy, |
| GLsizei width, GLsizei height, |
| GLint dstx, GLint dsty, GLenum type) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| struct intel_region *dst = intel_drawbuf_region(intel); |
| struct intel_region *src = copypix_src_region(intel, type); |
| GLenum src_format; |
| GLenum src_type; |
| |
| DBG("%s %d,%d %dx%d --> %d,%d\n", __FUNCTION__, |
| srcx, srcy, width, height, dstx, dsty); |
| |
| if (!src || !dst || type != GL_COLOR) |
| return GL_FALSE; |
| |
| /* Can't handle overlapping regions. Don't have sufficient control |
| * over rasterization to pull it off in-place. Punt on these for |
| * now. |
| * |
| * XXX: do a copy to a temporary. |
| */ |
| if (src->buffer == dst->buffer) { |
| drm_clip_rect_t srcbox; |
| drm_clip_rect_t dstbox; |
| drm_clip_rect_t tmp; |
| |
| srcbox.x1 = srcx; |
| srcbox.y1 = srcy; |
| srcbox.x2 = srcx + width; |
| srcbox.y2 = srcy + height; |
| |
| dstbox.x1 = dstx; |
| dstbox.y1 = dsty; |
| dstbox.x2 = dstx + width * ctx->Pixel.ZoomX; |
| dstbox.y2 = dsty + height * ctx->Pixel.ZoomY; |
| |
| DBG("src %d,%d %d,%d\n", srcbox.x1, srcbox.y1, srcbox.x2, srcbox.y2); |
| DBG("dst %d,%d %d,%d (%dx%d) (%f,%f)\n", dstbox.x1, dstbox.y1, dstbox.x2, dstbox.y2, |
| width, height, ctx->Pixel.ZoomX, ctx->Pixel.ZoomY); |
| |
| if (intel_intersect_cliprects(&tmp, &srcbox, &dstbox)) { |
| DBG("%s: regions overlap\n", __FUNCTION__); |
| return GL_FALSE; |
| } |
| } |
| |
| intelFlush(&intel->ctx); |
| |
| intel->vtbl.install_meta_state(intel); |
| |
| /* Is this true? Also will need to turn depth testing on according |
| * to state: |
| */ |
| intel->vtbl.meta_no_stencil_write(intel); |
| intel->vtbl.meta_no_depth_write(intel); |
| |
| /* Set the 3d engine to draw into the destination region: |
| */ |
| intel->vtbl.meta_draw_region(intel, dst, intel->depth_region); |
| |
| intel->vtbl.meta_import_pixel_state(intel); |
| |
| if (src->cpp == 2) { |
| src_format = GL_RGB; |
| src_type = GL_UNSIGNED_SHORT_5_6_5; |
| } |
| else { |
| src_format = GL_BGRA; |
| src_type = GL_UNSIGNED_BYTE; |
| } |
| |
| /* Set the frontbuffer up as a large rectangular texture. |
| */ |
| if (!intel->vtbl.meta_tex_rect_source(intel, src->buffer, 0, |
| src->pitch, |
| src->height, src_format, src_type)) { |
| intel->vtbl.leave_meta_state(intel); |
| return GL_FALSE; |
| } |
| |
| |
| intel->vtbl.meta_texture_blend_replace(intel); |
| |
| LOCK_HARDWARE(intel); |
| |
| if (intel->driDrawable->numClipRects) { |
| __DRIdrawablePrivate *dPriv = intel->driDrawable; |
| |
| |
| srcy = dPriv->h - srcy - height; /* convert from gl to hardware coords */ |
| |
| srcx += dPriv->x; |
| srcy += dPriv->y; |
| |
| /* Clip against the source region. This is the only source |
| * clipping we do. XXX: Just set the texcord wrap mode to clamp |
| * or similar. |
| * |
| */ |
| if (0) { |
| GLint orig_x = srcx; |
| GLint orig_y = srcy; |
| |
| if (!_mesa_clip_to_region(0, 0, src->pitch, src->height, |
| &srcx, &srcy, &width, &height)) |
| goto out; |
| |
| dstx += srcx - orig_x; |
| dsty += (srcy - orig_y) * ctx->Pixel.ZoomY; |
| } |
| |
| /* Just use the regular cliprect mechanism... Does this need to |
| * even hold the lock??? |
| */ |
| intel->vtbl.meta_draw_quad(intel, |
| dstx, |
| dstx + width * ctx->Pixel.ZoomX, |
| dPriv->h - (dsty + height * ctx->Pixel.ZoomY), |
| dPriv->h - (dsty), 0, /* XXX: what z value? */ |
| 0x00ff00ff, |
| srcx, srcx + width, srcy, srcy + height); |
| |
| out: |
| intel->vtbl.leave_meta_state(intel); |
| intel_batchbuffer_flush(intel->batch); |
| } |
| UNLOCK_HARDWARE(intel); |
| |
| DBG("%s: success\n", __FUNCTION__); |
| return GL_TRUE; |
| } |
| #endif /* I915 */ |
| |
| |
| /** |
| * CopyPixels with the blitter. Don't support zooming, pixel transfer, etc. |
| */ |
| static GLboolean |
| do_blit_copypixels(GLcontext * ctx, |
| GLint srcx, GLint srcy, |
| GLsizei width, GLsizei height, |
| GLint dstx, GLint dsty, GLenum type) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| struct intel_region *dst = intel_drawbuf_region(intel); |
| struct intel_region *src = copypix_src_region(intel, type); |
| |
| /* Copypixels can be more than a straight copy. Ensure all the |
| * extra operations are disabled: |
| */ |
| if (!intel_check_copypixel_blit_fragment_ops(ctx) || |
| ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F) |
| return GL_FALSE; |
| |
| if (!src || !dst) |
| return GL_FALSE; |
| |
| |
| |
| intelFlush(&intel->ctx); |
| |
| LOCK_HARDWARE(intel); |
| |
| if (intel->driDrawable->numClipRects) { |
| __DRIdrawablePrivate *dPriv = intel->driDrawable; |
| __DRIdrawablePrivate *dReadPriv = intel->driReadDrawable; |
| drm_clip_rect_t *box = dPriv->pClipRects; |
| GLint nbox = dPriv->numClipRects; |
| GLint delta_x = 0; |
| GLint delta_y = 0; |
| GLuint i; |
| |
| /* Do scissoring in GL coordinates: |
| */ |
| if (ctx->Scissor.Enabled) |
| { |
| GLint x = ctx->Scissor.X; |
| GLint y = ctx->Scissor.Y; |
| GLuint w = ctx->Scissor.Width; |
| GLuint h = ctx->Scissor.Height; |
| GLint dx = dstx - srcx; |
| GLint dy = dsty - srcy; |
| |
| if (!_mesa_clip_to_region(x, y, x+w-1, y+h-1, &dstx, &dsty, &width, &height)) |
| goto out; |
| |
| srcx = dstx - dx; |
| srcy = dsty - dy; |
| } |
| |
| /* Convert from GL to hardware coordinates: |
| */ |
| dsty = dPriv->h - dsty - height; |
| srcy = dPriv->h - srcy - height; |
| dstx += dPriv->x; |
| dsty += dPriv->y; |
| srcx += dReadPriv->x; |
| srcy += dReadPriv->y; |
| |
| /* Clip against the source region. This is the only source |
| * clipping we do. Dst is clipped with cliprects below. |
| */ |
| { |
| delta_x = srcx - dstx; |
| delta_y = srcy - dsty; |
| |
| if (!_mesa_clip_to_region(0, 0, src->pitch, src->height, |
| &srcx, &srcy, &width, &height)) |
| goto out; |
| |
| dstx = srcx - delta_x; |
| dsty = srcy - delta_y; |
| } |
| |
| /* Could do slightly more clipping: Eg, take the intersection of |
| * the existing set of cliprects and those cliprects translated |
| * by delta_x, delta_y: |
| * |
| * This code will not overwrite other windows, but will |
| * introduce garbage when copying from obscured window regions. |
| */ |
| for (i = 0; i < nbox; i++) { |
| GLint clip_x = dstx; |
| GLint clip_y = dsty; |
| GLint clip_w = width; |
| GLint clip_h = height; |
| |
| if (!_mesa_clip_to_region(box[i].x1, box[i].y1, box[i].x2, box[i].y2, |
| &clip_x, &clip_y, &clip_w, &clip_h)) |
| continue; |
| |
| intelEmitCopyBlit(intel, dst->cpp, |
| src->pitch, src->buffer, 0, src->tiled, |
| dst->pitch, dst->buffer, 0, dst->tiled, |
| clip_x + delta_x, clip_y + delta_y, /* srcx, srcy */ |
| clip_x, clip_y, /* dstx, dsty */ |
| clip_w, clip_h, |
| ctx->Color.ColorLogicOpEnabled ? |
| ctx->Color.LogicOp : GL_COPY); |
| } |
| |
| out: |
| intel_batchbuffer_flush(intel->batch); |
| } |
| UNLOCK_HARDWARE(intel); |
| |
| DBG("%s: success\n", __FUNCTION__); |
| return GL_TRUE; |
| } |
| |
| |
| void |
| intelCopyPixels(GLcontext * ctx, |
| GLint srcx, GLint srcy, |
| GLsizei width, GLsizei height, |
| GLint destx, GLint desty, GLenum type) |
| { |
| if (INTEL_DEBUG & DEBUG_PIXEL) |
| fprintf(stderr, "%s\n", __FUNCTION__); |
| |
| if (do_blit_copypixels(ctx, srcx, srcy, width, height, destx, desty, type)) |
| return; |
| |
| #ifdef I915 |
| if (do_texture_copypixels(ctx, srcx, srcy, width, height, destx, desty, type)) |
| return; |
| #endif |
| |
| DBG("fallback to _swrast_CopyPixels\n"); |
| |
| _swrast_CopyPixels(ctx, srcx, srcy, width, height, destx, desty, type); |
| } |
