| /************************************************************************** |
| * |
| * 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/image.h" |
| #include "main/state.h" |
| #include "main/mtypes.h" |
| #include "main/condrender.h" |
| #include "main/fbobject.h" |
| #include "drivers/common/meta.h" |
| |
| #include "intel_context.h" |
| #include "intel_buffers.h" |
| #include "intel_mipmap_tree.h" |
| #include "intel_regions.h" |
| #include "intel_pixel.h" |
| #include "intel_fbo.h" |
| |
| #define FILE_DEBUG_FLAG DEBUG_PIXEL |
| |
| /** |
| * 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 bool |
| intel_check_copypixel_blit_fragment_ops(struct gl_context * 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][0] || |
| !ctx->Color.ColorMask[0][1] || |
| !ctx->Color.ColorMask[0][2] || |
| !ctx->Color.ColorMask[0][3] || |
| ctx->Texture._EnabledUnits || |
| ctx->FragmentProgram._Enabled || |
| ctx->Color.BlendEnabled); |
| } |
| |
| |
| /** |
| * CopyPixels with the blitter. Don't support zooming, pixel transfer, etc. |
| */ |
| static bool |
| do_blit_copypixels(struct gl_context * ctx, |
| GLint srcx, GLint srcy, |
| GLsizei width, GLsizei height, |
| GLint dstx, GLint dsty, GLenum type) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| struct gl_framebuffer *fb = ctx->DrawBuffer; |
| struct gl_framebuffer *read_fb = ctx->ReadBuffer; |
| GLint orig_dstx; |
| GLint orig_dsty; |
| GLint orig_srcx; |
| GLint orig_srcy; |
| bool flip = false; |
| struct intel_renderbuffer *draw_irb = NULL; |
| struct intel_renderbuffer *read_irb = NULL; |
| gl_format read_format, draw_format; |
| |
| /* Update draw buffer bounds */ |
| _mesa_update_state(ctx); |
| |
| switch (type) { |
| case GL_COLOR: |
| if (fb->_NumColorDrawBuffers != 1) { |
| fallback_debug("glCopyPixels() fallback: MRT\n"); |
| return false; |
| } |
| |
| draw_irb = intel_renderbuffer(fb->_ColorDrawBuffers[0]); |
| read_irb = intel_renderbuffer(read_fb->_ColorReadBuffer); |
| break; |
| case GL_DEPTH_STENCIL_EXT: |
| draw_irb = intel_renderbuffer(fb->Attachment[BUFFER_DEPTH].Renderbuffer); |
| read_irb = |
| intel_renderbuffer(read_fb->Attachment[BUFFER_DEPTH].Renderbuffer); |
| break; |
| case GL_DEPTH: |
| fallback_debug("glCopyPixels() fallback: GL_DEPTH\n"); |
| return false; |
| case GL_STENCIL: |
| fallback_debug("glCopyPixels() fallback: GL_STENCIL\n"); |
| return false; |
| default: |
| fallback_debug("glCopyPixels(): Unknown type\n"); |
| return false; |
| } |
| |
| if (!draw_irb) { |
| fallback_debug("glCopyPixels() fallback: missing draw buffer\n"); |
| return false; |
| } |
| |
| if (!read_irb) { |
| fallback_debug("glCopyPixels() fallback: missing read buffer\n"); |
| return false; |
| } |
| |
| read_format = intel_rb_format(read_irb); |
| draw_format = intel_rb_format(draw_irb); |
| |
| if (draw_format != read_format && |
| !(draw_format == MESA_FORMAT_XRGB8888 && |
| read_format == MESA_FORMAT_ARGB8888)) { |
| fallback_debug("glCopyPixels() fallback: mismatched formats (%s -> %s\n", |
| _mesa_get_format_name(read_format), |
| _mesa_get_format_name(draw_format)); |
| return false; |
| } |
| |
| /* 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 false; |
| |
| intel_prepare_render(intel); |
| |
| intel_flush(&intel->ctx); |
| |
| /* 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; |
| |
| /* Flip dest Y if it's a window system framebuffer. */ |
| if (_mesa_is_winsys_fbo(fb)) { |
| /* copypixels to a window system framebuffer */ |
| dsty = fb->Height - dsty - height; |
| flip = !flip; |
| } |
| |
| /* Flip source Y if it's a window system framebuffer. */ |
| if (_mesa_is_winsys_fbo(read_fb)) { |
| srcy = read_fb->Height - srcy - height; |
| flip = !flip; |
| } |
| |
| srcx += read_irb->draw_x; |
| srcy += read_irb->draw_y; |
| dstx += draw_irb->draw_x; |
| dsty += draw_irb->draw_y; |
| |
| if (!intel_region_copy(intel, |
| draw_irb->mt->region, 0, dstx, dsty, |
| read_irb->mt->region, 0, srcx, srcy, |
| width, height, flip, |
| ctx->Color.ColorLogicOpEnabled ? |
| ctx->Color.LogicOp : GL_COPY)) { |
| DBG("%s: blit failure\n", __FUNCTION__); |
| return false; |
| } |
| |
| out: |
| intel_check_front_buffer_rendering(intel); |
| |
| DBG("%s: success\n", __FUNCTION__); |
| return true; |
| } |
| |
| |
| void |
| intelCopyPixels(struct gl_context * ctx, |
| GLint srcx, GLint srcy, |
| GLsizei width, GLsizei height, |
| GLint destx, GLint desty, GLenum type) |
| { |
| DBG("%s\n", __FUNCTION__); |
| |
| if (!_mesa_check_conditional_render(ctx)) |
| return; |
| |
| if (do_blit_copypixels(ctx, srcx, srcy, width, height, destx, desty, type)) |
| return; |
| |
| /* this will use swrast if needed */ |
| _mesa_meta_CopyPixels(ctx, srcx, srcy, width, height, destx, desty, type); |
| } |