/* * Copyright (C) 2010 Maciej Cencora * * 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_common_context.h" #include "radeon_buffer_objects.h" #include "radeon_debug.h" #include "radeon_mipmap_tree.h" static mesa_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_B5G6R5_UNORM; case GL_UNSIGNED_SHORT_5_6_5_REV: return MESA_FORMAT_R5G6B5_UNORM; } 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_A1B5G5R5_UNORM; case GL_UNSIGNED_INT_8_8_8_8: return MESA_FORMAT_A8B8G8R8_UNORM; case GL_UNSIGNED_BYTE: case GL_UNSIGNED_INT_8_8_8_8_REV: return MESA_FORMAT_R8G8B8A8_UNORM; } break; case GL_BGRA: switch (type) { case GL_UNSIGNED_SHORT_4_4_4_4: return MESA_FORMAT_A4R4G4B4_UNORM; case GL_UNSIGNED_SHORT_4_4_4_4_REV: return MESA_FORMAT_B4G4R4A4_UNORM; case GL_UNSIGNED_SHORT_5_5_5_1: return MESA_FORMAT_A1R5G5B5_UNORM; case GL_UNSIGNED_SHORT_1_5_5_5_REV: return MESA_FORMAT_B5G5R5A1_UNORM; case GL_UNSIGNED_INT_8_8_8_8: return MESA_FORMAT_A8R8G8B8_UNORM; case GL_UNSIGNED_BYTE: case GL_UNSIGNED_INT_8_8_8_8_REV: return MESA_FORMAT_B8G8R8A8_UNORM; } 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 mesa_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_enum_to_string(format), _mesa_enum_to_string(type)); if (ctx->NewState) _mesa_update_state(ctx); _mesa_readpixels(ctx, x, y, width, height, format, type, pack, pixels); }