2 * Copyright (C) 2010 Maciej Cencora <m.cencora@gmail.com>
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a 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, sublicense, 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
16 * portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
22 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 #include "main/bufferobj.h"
30 #include "main/enums.h"
31 #include "main/image.h"
32 #include "main/state.h"
33 #include "swrast/swrast.h"
35 #include "radeon_buffer_objects.h"
36 #include "radeon_common_context.h"
37 #include "radeon_debug.h"
38 #include "radeon_mipmap_tree.h"
40 static gl_format gl_format_and_type_to_mesa_format(GLenum format, GLenum type)
46 case GL_UNSIGNED_SHORT_5_6_5:
47 return MESA_FORMAT_RGB565;
48 case GL_UNSIGNED_SHORT_5_6_5_REV:
49 return MESA_FORMAT_RGB565_REV;
55 return MESA_FORMAT_RGBA_FLOAT32;
56 case GL_UNSIGNED_SHORT_5_5_5_1:
57 return MESA_FORMAT_RGBA5551;
58 case GL_UNSIGNED_INT_8_8_8_8:
59 return MESA_FORMAT_RGBA8888;
60 case GL_UNSIGNED_BYTE:
61 case GL_UNSIGNED_INT_8_8_8_8_REV:
62 return MESA_FORMAT_RGBA8888_REV;
67 case GL_UNSIGNED_SHORT_4_4_4_4:
68 return MESA_FORMAT_ARGB4444_REV;
69 case GL_UNSIGNED_SHORT_4_4_4_4_REV:
70 return MESA_FORMAT_ARGB4444;
71 case GL_UNSIGNED_SHORT_5_5_5_1:
72 return MESA_FORMAT_ARGB1555_REV;
73 case GL_UNSIGNED_SHORT_1_5_5_5_REV:
74 return MESA_FORMAT_ARGB1555;
75 case GL_UNSIGNED_INT_8_8_8_8:
76 return MESA_FORMAT_ARGB8888_REV;
77 case GL_UNSIGNED_BYTE:
78 case GL_UNSIGNED_INT_8_8_8_8_REV:
79 return MESA_FORMAT_ARGB8888;
85 return MESA_FORMAT_NONE;
89 do_blit_readpixels(struct gl_context * ctx,
90 GLint x, GLint y, GLsizei width, GLsizei height,
91 GLenum format, GLenum type,
92 const struct gl_pixelstore_attrib *pack, GLvoid * pixels)
94 radeonContextPtr radeon = RADEON_CONTEXT(ctx);
95 const struct radeon_renderbuffer *rrb = radeon_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer);
96 const gl_format dst_format = gl_format_and_type_to_mesa_format(format, type);
97 unsigned dst_rowstride, dst_imagesize, aligned_rowstride, flip_y;
98 struct radeon_bo *dst_buffer;
99 GLint dst_x = 0, dst_y = 0;
102 /* It's not worth if number of pixels to copy is really small */
103 if (width * height < 100) {
107 if (dst_format == MESA_FORMAT_NONE ||
108 !radeon->vtbl.check_blit(dst_format) || !radeon->vtbl.blit) {
112 if (ctx->_ImageTransferState || ctx->Color._LogicOpEnabled) {
116 if (pack->SwapBytes || pack->LsbFirst) {
120 if (pack->RowLength > 0) {
121 dst_rowstride = pack->RowLength;
123 dst_rowstride = width;
126 if (!_mesa_clip_copytexsubimage(ctx, &dst_x, &dst_y, &x, &y, &width, &height)) {
129 assert(x >= 0 && y >= 0);
131 aligned_rowstride = get_texture_image_row_stride(radeon, dst_format, dst_rowstride, 0);
132 dst_rowstride *= _mesa_get_format_bytes(dst_format);
133 if (_mesa_is_bufferobj(pack->BufferObj) && aligned_rowstride != dst_rowstride)
135 dst_imagesize = get_texture_image_size(dst_format,
139 if (!_mesa_is_bufferobj(pack->BufferObj))
141 dst_buffer = radeon_bo_open(radeon->radeonScreen->bom, 0, dst_imagesize, 1024, RADEON_GEM_DOMAIN_GTT, 0);
146 dst_buffer = get_radeon_buffer_object(pack->BufferObj)->bo;
147 dst_offset = (intptr_t)pixels;
150 /* Disable source Y flipping for FBOs */
151 flip_y = (ctx->ReadBuffer->Name == 0);
153 y = rrb->base.Height - height - y;
157 if (radeon->vtbl.blit(ctx,
161 rrb->pitch / rrb->cpp,
169 aligned_rowstride / _mesa_get_format_bytes(dst_format),
178 if (!_mesa_is_bufferobj(pack->BufferObj))
180 radeon_bo_map(dst_buffer, 0);
181 copy_rows(pixels, dst_rowstride, dst_buffer->ptr,
182 aligned_rowstride, height, dst_rowstride);
183 radeon_bo_unmap(dst_buffer);
184 radeon_bo_unref(dst_buffer);
190 if (!_mesa_is_bufferobj(pack->BufferObj))
191 radeon_bo_unref(dst_buffer);
197 radeonReadPixels(struct gl_context * ctx,
198 GLint x, GLint y, GLsizei width, GLsizei height,
199 GLenum format, GLenum type,
200 const struct gl_pixelstore_attrib *pack, GLvoid * pixels)
202 radeonContextPtr radeon = RADEON_CONTEXT(ctx);
203 radeon_prepare_render(radeon);
205 if (do_blit_readpixels(ctx, x, y, width, height, format, type, pack, pixels))
208 /* Update Mesa state before calling down into _swrast_ReadPixels, as
209 * the spans code requires the computed buffer states to be up to date,
210 * but _swrast_ReadPixels only updates Mesa state after setting up
214 radeon_print(RADEON_FALLBACKS, RADEON_NORMAL,
215 "Falling back to sw for ReadPixels (format %s, type %s)\n",
216 _mesa_lookup_enum_by_nr(format), _mesa_lookup_enum_by_nr(type));
219 _mesa_update_state(ctx);
221 _swrast_ReadPixels(ctx, x, y, width, height, format, type, pack, pixels);