/************************************************************************** * * 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 "mtypes.h" #include "macros.h" #include "state.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_regions.h" 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 * glDraw/CopyPixels. */ GLboolean intel_check_blit_fragment_ops(GLcontext * ctx) { if (ctx->NewState) _mesa_update_state(ctx); /* Could do logicop with the blitter: */ return !(ctx->_ImageTransferState || ctx->RenderMode != GL_RENDER || 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] || /* can do this! */ ctx->Color.ColorLogicOpEnabled || /* can do this! */ ctx->Texture._EnabledUnits || ctx->FragmentProgram._Enabled); } /** * 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_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); /* intel->vtbl.render_start(intel); */ /* intel->vtbl.emit_state(intel); */ LOCK_HARDWARE(intel); if (intel->driDrawable->numClipRects) { __DRIdrawablePrivate *dPriv = intel->driDrawable; drm_clip_rect_t *box = dPriv->pClipRects; drm_clip_rect_t dest_rect; 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 += dPriv->x; srcy += dPriv->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; } dest_rect.x1 = dstx; dest_rect.y1 = dsty; dest_rect.x2 = dstx + width; dest_rect.y2 = dsty + height; /* intel->vtbl.emit_flush(intel, 0); */ /* 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++) { drm_clip_rect_t rect; if (!intel_intersect_cliprects(&rect, &dest_rect, &box[i])) continue; intelEmitCopyBlit(intel, dst->cpp, src->pitch, src->buffer, 0, src->tiled, dst->pitch, dst->buffer, 0, dst->tiled, rect.x1 + delta_x, rect.y1 + delta_y, /* srcx, srcy */ rect.x1, rect.y1, /* dstx, dsty */ rect.x2 - rect.x1, rect.y2 - rect.y1); } intel->need_flush = GL_TRUE; out: intel_batchbuffer_flush(intel->batch); } UNLOCK_HARDWARE(intel); 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; if (INTEL_DEBUG & DEBUG_PIXEL) _mesa_printf("fallback to _swrast_CopyPixels\n"); _swrast_CopyPixels(ctx, srcx, srcy, width, height, destx, desty, type); }