/************************************************************************** * * 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 "main/glheader.h" #include "main/enums.h" #include "main/image.h" #include "main/state.h" #include "main/mtypes.h" #include "main/macros.h" #include "swrast/swrast.h" #include "intel_screen.h" #include "intel_context.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; if (ctx->Pixel.ZoomX > 0) { dstbox.x1 = dstx; dstbox.x2 = dstx + width * ctx->Pixel.ZoomX; } else { dstbox.x1 = dstx + width * ctx->Pixel.ZoomX; dstbox.x2 = dstx; } if (ctx->Pixel.ZoomY > 0) { dstbox.y1 = dsty; dstbox.y2 = dsty + height * ctx->Pixel.ZoomY; } else { dstbox.y1 = dsty + height * ctx->Pixel.ZoomY; dstbox.y2 = dsty; } 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_emit_mi_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); struct gl_framebuffer *fb = ctx->DrawBuffer; struct gl_framebuffer *read_fb = ctx->ReadBuffer; unsigned int num_cliprects; drm_clip_rect_t *cliprects; int x_off, y_off; /* Update draw buffer bounds */ _mesa_update_state(ctx); /* 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); intel_get_cliprects(intel, &cliprects, &num_cliprects, &x_off, &y_off); if (num_cliprects != 0) { GLint delta_x; GLint delta_y; GLint orig_dstx; GLint orig_dsty; GLint orig_srcx; GLint orig_srcy; GLuint i; /* XXX: We fail to handle different inversion between read and draw framebuffer. */ /* Clip to destination buffer. */ orig_dstx = dstx; orig_dsty = dsty; if (!_mesa_clip_to_region(fb->_Xmin, fb->_Ymin, fb->_Xmax, fb->_Ymax, &dstx, &dsty, &width, &height)) goto out; /* Adjust src coords for our post-clipped destination origin */ srcx += dstx - orig_dstx; srcy += dsty - orig_dsty; /* Clip to source buffer. */ orig_srcx = srcx; orig_srcy = srcy; if (!_mesa_clip_to_region(0, 0, read_fb->Width, read_fb->Height, &srcx, &srcy, &width, &height)) goto out; /* Adjust dst coords for our post-clipped source origin */ dstx += srcx - orig_srcx; dsty += srcy - orig_srcy; /* Convert from GL to hardware coordinates: */ if (fb->Name == 0) { /* copypixels to a system framebuffer */ dstx = x_off + dstx; dsty = y_off + (fb->Height - dsty - height); } else { /* copypixels to a user framebuffer object */ dstx = x_off + dstx; dsty = y_off + dsty; } /* Flip source Y if it's a system framebuffer. */ if (read_fb->Name == 0) { srcx = intel->driReadDrawable->x + srcx; srcy = intel->driReadDrawable->y + (fb->Height - srcy - height); } delta_x = srcx - dstx; delta_y = srcy - dsty; /* Could do slightly more clipping: Eg, take the intersection of * the destination cliprects and the read drawable cliprects * * This code will not overwrite other windows, but will * introduce garbage when copying from obscured window regions. */ for (i = 0; i < num_cliprects; i++) { GLint clip_x = dstx; GLint clip_y = dsty; GLint clip_w = width; GLint clip_h = height; if (!_mesa_clip_to_region(cliprects[i].x1, cliprects[i].y1, cliprects[i].x2, cliprects[i].y2, &clip_x, &clip_y, &clip_w, &clip_h)) continue; intelEmitCopyBlit(intel, dst->cpp, src->pitch, src->buffer, 0, src->tiling, dst->pitch, dst->buffer, 0, dst->tiling, 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: 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); }