1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
28 #include "main/glheader.h"
29 #include "main/image.h"
30 #include "main/state.h"
31 #include "main/mtypes.h"
32 #include "main/condrender.h"
33 #include "drivers/common/meta.h"
35 #include "intel_context.h"
36 #include "intel_buffers.h"
37 #include "intel_mipmap_tree.h"
38 #include "intel_regions.h"
39 #include "intel_pixel.h"
40 #include "intel_fbo.h"
42 #define FILE_DEBUG_FLAG DEBUG_PIXEL
45 * Check if any fragment operations are in effect which might effect
46 * glCopyPixels. Differs from intel_check_blit_fragment_ops in that
50 intel_check_copypixel_blit_fragment_ops(struct gl_context * ctx)
53 _mesa_update_state(ctx);
55 /* Could do logicop with the blitter:
57 return !(ctx->_ImageTransferState ||
58 ctx->Color.AlphaEnabled ||
61 ctx->Stencil._Enabled ||
62 !ctx->Color.ColorMask[0][0] ||
63 !ctx->Color.ColorMask[0][1] ||
64 !ctx->Color.ColorMask[0][2] ||
65 !ctx->Color.ColorMask[0][3] ||
66 ctx->Texture._EnabledUnits ||
67 ctx->FragmentProgram._Enabled ||
68 ctx->Color.BlendEnabled);
73 * CopyPixels with the blitter. Don't support zooming, pixel transfer, etc.
76 do_blit_copypixels(struct gl_context * ctx,
77 GLint srcx, GLint srcy,
78 GLsizei width, GLsizei height,
79 GLint dstx, GLint dsty, GLenum type)
81 struct intel_context *intel = intel_context(ctx);
82 struct gl_framebuffer *fb = ctx->DrawBuffer;
83 struct gl_framebuffer *read_fb = ctx->ReadBuffer;
89 struct intel_renderbuffer *draw_irb = NULL;
90 struct intel_renderbuffer *read_irb = NULL;
91 gl_format read_format, draw_format;
93 /* Update draw buffer bounds */
94 _mesa_update_state(ctx);
98 if (fb->_NumColorDrawBuffers != 1) {
99 fallback_debug("glCopyPixels() fallback: MRT\n");
103 draw_irb = intel_renderbuffer(fb->_ColorDrawBuffers[0]);
104 read_irb = intel_renderbuffer(read_fb->_ColorReadBuffer);
106 case GL_DEPTH_STENCIL_EXT:
107 draw_irb = intel_renderbuffer(fb->Attachment[BUFFER_DEPTH].Renderbuffer);
109 intel_renderbuffer(read_fb->Attachment[BUFFER_DEPTH].Renderbuffer);
112 fallback_debug("glCopyPixels() fallback: GL_DEPTH\n");
115 fallback_debug("glCopyPixels() fallback: GL_STENCIL\n");
118 fallback_debug("glCopyPixels(): Unknown type\n");
123 fallback_debug("glCopyPixels() fallback: missing draw buffer\n");
128 fallback_debug("glCopyPixels() fallback: missing read buffer\n");
132 read_format = intel_rb_format(read_irb);
133 draw_format = intel_rb_format(draw_irb);
135 if (draw_format != read_format &&
136 !(draw_format == MESA_FORMAT_XRGB8888 &&
137 read_format == MESA_FORMAT_ARGB8888)) {
138 fallback_debug("glCopyPixels() fallback: mismatched formats (%s -> %s\n",
139 _mesa_get_format_name(read_format),
140 _mesa_get_format_name(draw_format));
144 /* Copypixels can be more than a straight copy. Ensure all the
145 * extra operations are disabled:
147 if (!intel_check_copypixel_blit_fragment_ops(ctx) ||
148 ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F)
151 intel_prepare_render(intel);
153 intel_flush(&intel->ctx);
155 /* Clip to destination buffer. */
158 if (!_mesa_clip_to_region(fb->_Xmin, fb->_Ymin,
159 fb->_Xmax, fb->_Ymax,
160 &dstx, &dsty, &width, &height))
162 /* Adjust src coords for our post-clipped destination origin */
163 srcx += dstx - orig_dstx;
164 srcy += dsty - orig_dsty;
166 /* Clip to source buffer. */
169 if (!_mesa_clip_to_region(0, 0,
170 read_fb->Width, read_fb->Height,
171 &srcx, &srcy, &width, &height))
173 /* Adjust dst coords for our post-clipped source origin */
174 dstx += srcx - orig_srcx;
175 dsty += srcy - orig_srcy;
177 /* Flip dest Y if it's a window system framebuffer. */
179 /* copypixels to a window system framebuffer */
180 dsty = fb->Height - dsty - height;
184 /* Flip source Y if it's a window system framebuffer. */
185 if (read_fb->Name == 0) {
186 srcy = read_fb->Height - srcy - height;
190 srcx += read_irb->draw_x;
191 srcy += read_irb->draw_y;
192 dstx += draw_irb->draw_x;
193 dsty += draw_irb->draw_y;
195 if (!intel_region_copy(intel,
196 draw_irb->mt->region, 0, dstx, dsty,
197 read_irb->mt->region, 0, srcx, srcy,
199 ctx->Color.ColorLogicOpEnabled ?
200 ctx->Color.LogicOp : GL_COPY)) {
201 DBG("%s: blit failure\n", __FUNCTION__);
206 intel_check_front_buffer_rendering(intel);
208 DBG("%s: success\n", __FUNCTION__);
214 intelCopyPixels(struct gl_context * ctx,
215 GLint srcx, GLint srcy,
216 GLsizei width, GLsizei height,
217 GLint destx, GLint desty, GLenum type)
219 DBG("%s\n", __FUNCTION__);
221 if (!_mesa_check_conditional_render(ctx))
224 if (do_blit_copypixels(ctx, srcx, srcy, width, height, destx, desty, type))
227 /* this will use swrast if needed */
228 _mesa_meta_CopyPixels(ctx, srcx, srcy, width, height, destx, desty, type);