diff options
Diffstat (limited to 'src/mesa/drivers/dri/radeon')
| -rw-r--r-- | src/mesa/drivers/dri/radeon/Makefile | 1 | ||||
| -rw-r--r-- | src/mesa/drivers/dri/radeon/radeon_common.h | 6 | ||||
| -rw-r--r-- | src/mesa/drivers/dri/radeon/radeon_pixel_read.c | 188 |
3 files changed, 195 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/radeon/Makefile b/src/mesa/drivers/dri/radeon/Makefile index 6904ebbee3..19df62742e 100644 --- a/src/mesa/drivers/dri/radeon/Makefile +++ b/src/mesa/drivers/dri/radeon/Makefile @@ -22,6 +22,7 @@ RADEON_COMMON_SOURCES = \ radeon_fbo.c \ radeon_lock.c \ radeon_mipmap_tree.c \ + radeon_pixel_read.c \ radeon_queryobj.c \ radeon_span.c \ radeon_texture.c \ diff --git a/src/mesa/drivers/dri/radeon/radeon_common.h b/src/mesa/drivers/dri/radeon/radeon_common.h index cd01c9984e..35b3f08fff 100644 --- a/src/mesa/drivers/dri/radeon/radeon_common.h +++ b/src/mesa/drivers/dri/radeon/radeon_common.h @@ -44,6 +44,12 @@ radeon_renderbuffer_set_bo(struct radeon_renderbuffer *rb, struct radeon_renderbuffer * radeon_create_renderbuffer(gl_format format, __DRIdrawable *driDrawPriv); +void +radeonReadPixels(GLcontext * ctx, + GLint x, GLint y, GLsizei width, GLsizei height, + GLenum format, GLenum type, + const struct gl_pixelstore_attrib *pack, GLvoid * pixels); + void radeon_check_front_buffer_rendering(GLcontext *ctx); static inline struct radeon_renderbuffer *radeon_renderbuffer(struct gl_renderbuffer *rb) { diff --git a/src/mesa/drivers/dri/radeon/radeon_pixel_read.c b/src/mesa/drivers/dri/radeon/radeon_pixel_read.c new file mode 100644 index 0000000000..27841938e6 --- /dev/null +++ b/src/mesa/drivers/dri/radeon/radeon_pixel_read.c @@ -0,0 +1,188 @@ +/* + * Copyright (C) 2010 Maciej Cencora <m.cencora@gmail.com> + * + * 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, sublicense, 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 NONINFRINGEMENT. + * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) 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 "stdint.h" +#include "main/bufferobj.h" +#include "main/enums.h" +#include "main/image.h" +#include "main/state.h" +#include "swrast/swrast.h" + +#include "radeon_common_context.h" +#include "radeon_debug.h" +#include "radeon_mipmap_tree.h" + +static gl_format gl_format_and_type_to_mesa_format(GLenum format, GLenum type) +{ + switch (format) + { + case GL_RGB: + switch (type) { + case GL_UNSIGNED_SHORT_5_6_5: + return MESA_FORMAT_RGB565; + case GL_UNSIGNED_SHORT_5_6_5_REV: + return MESA_FORMAT_RGB565_REV; + } + break; + case GL_RGBA: + switch (type) { + case GL_UNSIGNED_BYTE: + return MESA_FORMAT_RGBA8888_REV; + case GL_FLOAT: + return MESA_FORMAT_RGBA_FLOAT32; + case GL_UNSIGNED_SHORT_4_4_4_4: + return MESA_FORMAT_ARGB4444; + case GL_UNSIGNED_SHORT_4_4_4_4_REV: + return MESA_FORMAT_ARGB4444; + case GL_UNSIGNED_SHORT_5_5_5_1: + return MESA_FORMAT_RGBA5551; + case GL_UNSIGNED_SHORT_1_5_5_5_REV: + return MESA_FORMAT_ARGB1555_REV; + case GL_UNSIGNED_INT_8_8_8_8: + return MESA_FORMAT_ARGB8888; + case GL_UNSIGNED_INT_8_8_8_8_REV: + return MESA_FORMAT_ARGB8888_REV; + } + break; + } + + return MESA_FORMAT_NONE; +} + +static GLboolean +do_blit_readpixels(GLcontext * ctx, + GLint x, GLint y, GLsizei width, GLsizei height, + GLenum format, GLenum type, + const struct gl_pixelstore_attrib *pack, GLvoid * pixels) +{ + radeonContextPtr radeon = RADEON_CONTEXT(ctx); + const struct radeon_renderbuffer *rrb = radeon_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer); + const gl_format dst_format = gl_format_and_type_to_mesa_format(format, type); + unsigned dst_rowstride, dst_imagesize, aligned_rowstride, flip_y; + struct radeon_bo *dst_buffer; + GLint dst_x = 0, dst_y = 0; + + /* It's not worth if number of pixels to copy is really small */ + if (width * height < 100) { + return GL_FALSE; + } + + if (dst_format == MESA_FORMAT_NONE || + !radeon->vtbl.check_blit(dst_format) || !radeon->vtbl.blit) { + return GL_FALSE; + } + + if (ctx->_ImageTransferState) { + return GL_FALSE; + } + + if (pack->SwapBytes || pack->LsbFirst) { + return GL_FALSE; + } + + if (pack->RowLength > 0) { + dst_rowstride = pack->RowLength; + } else { + dst_rowstride = width; + } + + if (!_mesa_clip_copytexsubimage(ctx, &dst_x, &dst_y, &x, &y, &width, &height)) { + return GL_TRUE; + } + assert(x >= 0 && y >= 0); + + aligned_rowstride = get_texture_image_row_stride(radeon, dst_format, dst_rowstride, 0); + dst_imagesize = get_texture_image_size(dst_format, + aligned_rowstride, + height, 1, 0); + dst_buffer = radeon_bo_open(radeon->radeonScreen->bom, 0, dst_imagesize, 1024, RADEON_GEM_DOMAIN_GTT, 0); + + /* Disable source Y flipping for FBOs */ + flip_y = (ctx->ReadBuffer->Name == 0); + if (pack->Invert) { + y = rrb->base.Height - height - y; + flip_y = !flip_y; + } + + if (radeon->vtbl.blit(ctx, + rrb->bo, + rrb->draw_offset, + rrb->base.Format, + rrb->pitch / rrb->cpp, + rrb->base.Width, + rrb->base.Height, + x, + y, + dst_buffer, + 0, /* dst_offset */ + dst_format, + aligned_rowstride / _mesa_get_format_bytes(dst_format), + width, + height, + 0, /* dst_x */ + 0, /* dst_y */ + width, + height, + flip_y)) + { + radeon_bo_map(dst_buffer, 0); + dst_rowstride *= _mesa_get_format_bytes(dst_format); + copy_rows(pixels, dst_rowstride, dst_buffer->ptr, + aligned_rowstride, height, dst_rowstride); + radeon_bo_unmap(dst_buffer); + radeon_bo_unref(dst_buffer); + return GL_TRUE; + } else { + radeon_bo_unref(dst_buffer); + return GL_FALSE; + } +} + +void +radeonReadPixels(GLcontext * ctx, + GLint x, GLint y, GLsizei width, GLsizei height, + GLenum format, GLenum type, + const struct gl_pixelstore_attrib *pack, GLvoid * pixels) +{ + if (do_blit_readpixels(ctx, x, y, width, height, format, type, pack, pixels)) + return; + + /* Update Mesa state before calling down into _swrast_ReadPixels, as + * the spans code requires the computed buffer states to be up to date, + * but _swrast_ReadPixels only updates Mesa state after setting up + * the spans code. + */ + + radeon_print(RADEON_FALLBACKS, RADEON_NORMAL, + "Falling back to sw for ReadPixels (format %s, type %s)\n", + _mesa_lookup_enum_by_nr(format), _mesa_lookup_enum_by_nr(type)); + + if (ctx->NewState) + _mesa_update_state(ctx); + + _swrast_ReadPixels(ctx, x, y, width, height, format, type, pack, pixels); +} |