| /* |
| * 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/fbobject.h" |
| #include "main/image.h" |
| #include "main/readpix.h" |
| #include "main/state.h" |
| |
| #include "radeon_buffer_objects.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_FLOAT: |
| return MESA_FORMAT_RGBA_FLOAT32; |
| case GL_UNSIGNED_SHORT_5_5_5_1: |
| return MESA_FORMAT_RGBA5551; |
| case GL_UNSIGNED_INT_8_8_8_8: |
| return MESA_FORMAT_RGBA8888; |
| case GL_UNSIGNED_BYTE: |
| case GL_UNSIGNED_INT_8_8_8_8_REV: |
| return MESA_FORMAT_RGBA8888_REV; |
| } |
| break; |
| case GL_BGRA: |
| switch (type) { |
| case GL_UNSIGNED_SHORT_4_4_4_4: |
| return MESA_FORMAT_ARGB4444_REV; |
| case GL_UNSIGNED_SHORT_4_4_4_4_REV: |
| return MESA_FORMAT_ARGB4444; |
| case GL_UNSIGNED_SHORT_5_5_5_1: |
| return MESA_FORMAT_ARGB1555_REV; |
| case GL_UNSIGNED_SHORT_1_5_5_5_REV: |
| return MESA_FORMAT_ARGB1555; |
| case GL_UNSIGNED_INT_8_8_8_8: |
| return MESA_FORMAT_ARGB8888_REV; |
| case GL_UNSIGNED_BYTE: |
| case GL_UNSIGNED_INT_8_8_8_8_REV: |
| return MESA_FORMAT_ARGB8888; |
| |
| } |
| break; |
| } |
| |
| return MESA_FORMAT_NONE; |
| } |
| |
| static GLboolean |
| do_blit_readpixels(struct gl_context * 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; |
| intptr_t dst_offset; |
| |
| /* 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, rrb->pitch / rrb->cpp) || !radeon->vtbl.blit) { |
| return GL_FALSE; |
| } |
| |
| if (ctx->_ImageTransferState || ctx->Color.ColorLogicOpEnabled) { |
| 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, GL_TEXTURE_2D); |
| dst_rowstride *= _mesa_get_format_bytes(dst_format); |
| if (_mesa_is_bufferobj(pack->BufferObj) && aligned_rowstride != dst_rowstride) |
| return GL_FALSE; |
| dst_imagesize = get_texture_image_size(dst_format, |
| aligned_rowstride, |
| height, 1, 0); |
| |
| if (!_mesa_is_bufferobj(pack->BufferObj)) |
| { |
| dst_buffer = radeon_bo_open(radeon->radeonScreen->bom, 0, dst_imagesize, 1024, RADEON_GEM_DOMAIN_GTT, 0); |
| dst_offset = 0; |
| } |
| else |
| { |
| dst_buffer = get_radeon_buffer_object(pack->BufferObj)->bo; |
| dst_offset = (intptr_t)pixels; |
| } |
| |
| /* Disable source Y flipping for FBOs */ |
| flip_y = _mesa_is_winsys_fbo(ctx->ReadBuffer); |
| if (pack->Invert) { |
| y = rrb->base.Base.Height - height - y; |
| flip_y = !flip_y; |
| } |
| |
| if (radeon->vtbl.blit(ctx, |
| rrb->bo, |
| rrb->draw_offset, |
| rrb->base.Base.Format, |
| rrb->pitch / rrb->cpp, |
| rrb->base.Base.Width, |
| rrb->base.Base.Height, |
| x, |
| y, |
| dst_buffer, |
| dst_offset, |
| dst_format, |
| aligned_rowstride / _mesa_get_format_bytes(dst_format), |
| width, |
| height, |
| 0, /* dst_x */ |
| 0, /* dst_y */ |
| width, |
| height, |
| flip_y)) |
| { |
| if (!_mesa_is_bufferobj(pack->BufferObj)) |
| { |
| radeon_bo_map(dst_buffer, 0); |
| 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; |
| } |
| |
| if (!_mesa_is_bufferobj(pack->BufferObj)) |
| radeon_bo_unref(dst_buffer); |
| |
| return GL_FALSE; |
| } |
| |
| void |
| radeonReadPixels(struct gl_context * 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); |
| radeon_prepare_render(radeon); |
| |
| if (do_blit_readpixels(ctx, x, y, width, height, format, type, pack, pixels)) |
| return; |
| |
| /* Update Mesa state before calling _mesa_readpixels(). |
| * XXX this may not be needed since ReadPixels no longer uses the |
| * span 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); |
| |
| _mesa_readpixels(ctx, x, y, width, height, format, type, pack, pixels); |
| } |
