1 /*
2 * Copyright 2003 VMware, Inc.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
15 * of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26 #include "main/image.h"
27 #include "main/state.h"
28 #include "main/stencil.h"
29 #include "main/mtypes.h"
30 #include "main/condrender.h"
31 #include "main/fbobject.h"
32 #include "drivers/common/meta.h"
33
34 #include "brw_context.h"
35 #include "intel_buffers.h"
36 #include "intel_mipmap_tree.h"
37 #include "intel_pixel.h"
38 #include "intel_fbo.h"
39 #include "intel_blit.h"
40 #include "intel_batchbuffer.h"
41
42 #define FILE_DEBUG_FLAG DEBUG_PIXEL
43
44 /**
45 * CopyPixels with the blitter. Don't support zooming, pixel transfer, etc.
46 */
47 static bool
do_blit_copypixels(struct gl_context * ctx,GLint srcx,GLint srcy,GLsizei width,GLsizei height,GLint dstx,GLint dsty,GLenum type)48 do_blit_copypixels(struct gl_context * ctx,
49 GLint srcx, GLint srcy,
50 GLsizei width, GLsizei height,
51 GLint dstx, GLint dsty, GLenum type)
52 {
53 struct brw_context *brw = brw_context(ctx);
54 struct gl_framebuffer *fb = ctx->DrawBuffer;
55 struct gl_framebuffer *read_fb = ctx->ReadBuffer;
56 GLint orig_dstx;
57 GLint orig_dsty;
58 GLint orig_srcx;
59 GLint orig_srcy;
60 struct intel_renderbuffer *draw_irb = NULL;
61 struct intel_renderbuffer *read_irb = NULL;
62
63 /* Update draw buffer bounds */
64 _mesa_update_state(ctx);
65
66 intel_prepare_render(brw);
67
68 switch (type) {
69 case GL_COLOR:
70 if (fb->_NumColorDrawBuffers != 1) {
71 perf_debug("glCopyPixels() fallback: MRT\n");
72 return false;
73 }
74
75 draw_irb = intel_renderbuffer(fb->_ColorDrawBuffers[0]);
76 read_irb = intel_renderbuffer(read_fb->_ColorReadBuffer);
77 break;
78 case GL_DEPTH_STENCIL_EXT:
79 draw_irb = intel_renderbuffer(fb->Attachment[BUFFER_DEPTH].Renderbuffer);
80 read_irb =
81 intel_renderbuffer(read_fb->Attachment[BUFFER_DEPTH].Renderbuffer);
82 break;
83 case GL_DEPTH:
84 perf_debug("glCopyPixels() fallback: GL_DEPTH\n");
85 return false;
86 case GL_STENCIL:
87 perf_debug("glCopyPixels() fallback: GL_STENCIL\n");
88 return false;
89 default:
90 perf_debug("glCopyPixels(): Unknown type\n");
91 return false;
92 }
93
94 if (!draw_irb) {
95 perf_debug("glCopyPixels() fallback: missing draw buffer\n");
96 return false;
97 }
98
99 if (!read_irb) {
100 perf_debug("glCopyPixels() fallback: missing read buffer\n");
101 return false;
102 }
103
104 if (draw_irb->mt->surf.samples > 1 || read_irb->mt->surf.samples > 1) {
105 perf_debug("glCopyPixels() fallback: multisampled buffers\n");
106 return false;
107 }
108
109 if (ctx->_ImageTransferState) {
110 perf_debug("glCopyPixels(): Unsupported image transfer state\n");
111 return false;
112 }
113
114 if (ctx->Depth.Test) {
115 perf_debug("glCopyPixels(): Unsupported depth test state\n");
116 return false;
117 }
118
119 if (brw->stencil_enabled) {
120 perf_debug("glCopyPixels(): Unsupported stencil test state\n");
121 return false;
122 }
123
124 if (ctx->Fog.Enabled ||
125 ctx->Texture._MaxEnabledTexImageUnit != -1 ||
126 _mesa_arb_fragment_program_enabled(ctx)) {
127 perf_debug("glCopyPixels(): Unsupported fragment shader state\n");
128 return false;
129 }
130
131 if (ctx->Color.AlphaEnabled ||
132 ctx->Color.BlendEnabled) {
133 perf_debug("glCopyPixels(): Unsupported blend state\n");
134 return false;
135 }
136
137 if (!ctx->Color.ColorMask[0][0] ||
138 !ctx->Color.ColorMask[0][1] ||
139 !ctx->Color.ColorMask[0][2] ||
140 !ctx->Color.ColorMask[0][3]) {
141 perf_debug("glCopyPixels(): Unsupported color mask state\n");
142 return false;
143 }
144
145 if (ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F) {
146 perf_debug("glCopyPixels(): Unsupported pixel zoom\n");
147 return false;
148 }
149
150 intel_batchbuffer_flush(brw);
151
152 /* Clip to destination buffer. */
153 orig_dstx = dstx;
154 orig_dsty = dsty;
155 if (!_mesa_clip_to_region(fb->_Xmin, fb->_Ymin,
156 fb->_Xmax, fb->_Ymax,
157 &dstx, &dsty, &width, &height))
158 goto out;
159 /* Adjust src coords for our post-clipped destination origin */
160 srcx += dstx - orig_dstx;
161 srcy += dsty - orig_dsty;
162
163 /* Clip to source buffer. */
164 orig_srcx = srcx;
165 orig_srcy = srcy;
166 if (!_mesa_clip_to_region(0, 0,
167 read_fb->Width, read_fb->Height,
168 &srcx, &srcy, &width, &height))
169 goto out;
170 /* Adjust dst coords for our post-clipped source origin */
171 dstx += srcx - orig_srcx;
172 dsty += srcy - orig_srcy;
173
174 if (!intel_miptree_blit(brw,
175 read_irb->mt, read_irb->mt_level, read_irb->mt_layer,
176 srcx, srcy, _mesa_is_winsys_fbo(read_fb),
177 draw_irb->mt, draw_irb->mt_level, draw_irb->mt_layer,
178 dstx, dsty, _mesa_is_winsys_fbo(fb),
179 width, height,
180 (ctx->Color.ColorLogicOpEnabled ?
181 ctx->Color.LogicOp : GL_COPY))) {
182 DBG("%s: blit failure\n", __func__);
183 return false;
184 }
185
186 if (ctx->Query.CurrentOcclusionObject)
187 ctx->Query.CurrentOcclusionObject->Result += width * height;
188
189 out:
190
191 DBG("%s: success\n", __func__);
192 return true;
193 }
194
195
196 void
intelCopyPixels(struct gl_context * ctx,GLint srcx,GLint srcy,GLsizei width,GLsizei height,GLint destx,GLint desty,GLenum type)197 intelCopyPixels(struct gl_context * ctx,
198 GLint srcx, GLint srcy,
199 GLsizei width, GLsizei height,
200 GLint destx, GLint desty, GLenum type)
201 {
202 DBG("%s\n", __func__);
203
204 if (!_mesa_check_conditional_render(ctx))
205 return;
206
207 if (do_blit_copypixels(ctx, srcx, srcy, width, height, destx, desty, type))
208 return;
209
210 /* this will use swrast if needed */
211 _mesa_meta_CopyPixels(ctx, srcx, srcy, width, height, destx, desty, type);
212 }
213