/************************************************************************** * * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas. * 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, sub license, 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 NON-INFRINGEMENT. * IN NO EVENT SHALL TUNGSTEN GRAPHICS 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. * **************************************************************************/ /* Provide additional functionality on top of bufmgr buffers: * - 2d semantics and blit operations (XXX: remove/simplify blits??) * - refcounting of buffers for multiple images in a buffer. * - refcounting of buffer mappings. */ #include "i915_context.h" #include "i915_winsys.h" #include "i915_blit.h" static void i915_region_idle(struct pipe_context *pipe, struct pipe_region *region) { } static GLubyte * i915_region_map(struct pipe_context *pipe, struct pipe_region *region) { struct i915_context *i915 = i915_context( pipe ); if (!region->map_refcount++) { region->map = i915->winsys->buffer_map( i915->winsys, region->buffer ); } return region->map; } static void i915_region_unmap(struct pipe_context *pipe, struct pipe_region *region) { struct i915_context *i915 = i915_context( pipe ); if (!--region->map_refcount) { i915->winsys->buffer_unmap( i915->winsys, region->buffer ); region->map = NULL; } } static struct pipe_region * i915_region_alloc(struct pipe_context *pipe, GLuint cpp, GLuint width, GLuint height) { struct i915_context *i915 = i915_context( pipe ); struct pipe_region *region = calloc(sizeof(*region), 1); /* Choose a pitch to match hardware requirements - requires 64 byte * alignment of render targets. * * XXX: is this ok for textures?? * clearly want to be able to render to textures under some * circumstances, but maybe not always a requirement. */ unsigned pitch = ((cpp * width + 63) & ~63) / cpp; region->cpp = cpp; region->pitch = pitch; region->height = height; /* needed? */ region->refcount = 1; region->buffer = i915->winsys->create_buffer( i915->winsys, 64 ); i915->winsys->buffer_data( i915->winsys, region->buffer, pitch * cpp * height, NULL ); return region; } static void i915_region_release(struct pipe_context *pipe, struct pipe_region **region) { struct i915_context *i915 = i915_context( pipe ); if (!*region) return; ASSERT((*region)->refcount > 0); (*region)->refcount--; if ((*region)->refcount == 0) { assert((*region)->map_refcount == 0); i915->winsys->buffer_unreference( i915->winsys, (*region)->buffer ); free(*region); } *region = NULL; } /* * XXX Move this into core Mesa? */ static void _mesa_copy_rect(GLubyte * dst, GLuint cpp, GLuint dst_pitch, GLuint dst_x, GLuint dst_y, GLuint width, GLuint height, const GLubyte * src, GLuint src_pitch, GLuint src_x, GLuint src_y) { GLuint i; dst_pitch *= cpp; src_pitch *= cpp; dst += dst_x * cpp; src += src_x * cpp; dst += dst_y * dst_pitch; src += src_y * dst_pitch; width *= cpp; if (width == dst_pitch && width == src_pitch) memcpy(dst, src, height * width); else { for (i = 0; i < height; i++) { memcpy(dst, src, width); dst += dst_pitch; src += src_pitch; } } } /* Upload data to a rectangular sub-region. Lots of choices how to do this: * * - memcpy by span to current destination * - upload data as new buffer and blit * * Currently always memcpy. */ static void i915_region_data(struct pipe_context *pipe, struct pipe_region *dst, GLuint dst_offset, GLuint dstx, GLuint dsty, const void *src, GLuint src_pitch, GLuint srcx, GLuint srcy, GLuint width, GLuint height) { _mesa_copy_rect(pipe->region_map(pipe, dst) + dst_offset, dst->cpp, dst->pitch, dstx, dsty, width, height, src, src_pitch, srcx, srcy); pipe->region_unmap(pipe, dst); } /* Assumes all values are within bounds -- no checking at this level - * do it higher up if required. */ static void i915_region_copy(struct pipe_context *pipe, struct pipe_region *dst, GLuint dst_offset, GLuint dstx, GLuint dsty, struct pipe_region *src, GLuint src_offset, GLuint srcx, GLuint srcy, GLuint width, GLuint height) { assert( dst != src ); assert( dst->cpp == src->cpp ); if (0) { _mesa_copy_rect(pipe->region_map(pipe, dst) + dst_offset, dst->cpp, dst->pitch, dstx, dsty, width, height, pipe->region_map(pipe, src) + src_offset, src->pitch, srcx, srcy); pipe->region_unmap(pipe, src); pipe->region_unmap(pipe, dst); } else { i915_copy_blit( i915_context(pipe), dst->cpp, src->pitch, src->buffer, src_offset, dst->pitch, dst->buffer, dst_offset, srcx, srcy, dstx, dsty, width, height ); } } /* Fill a rectangular sub-region. Need better logic about when to * push buffers into AGP - will currently do so whenever possible. */ static GLubyte * get_pointer(struct pipe_region *dst, GLuint x, GLuint y) { return dst->map + (y * dst->pitch + x) * dst->cpp; } static void i915_region_fill(struct pipe_context *pipe, struct pipe_region *dst, GLuint dst_offset, GLuint dstx, GLuint dsty, GLuint width, GLuint height, GLuint value) { if (0) { GLuint i, j; (void)pipe->region_map(pipe, dst); switch (dst->cpp) { case 1: { GLubyte *row = get_pointer(dst, dstx, dsty); for (i = 0; i < height; i++) { memset(row, value, width); row += dst->pitch; } } break; case 2: { GLushort *row = (GLushort *) get_pointer(dst, dstx, dsty); for (i = 0; i < height; i++) { for (j = 0; j < width; j++) row[j] = value; row += dst->pitch; } } break; case 4: { GLuint *row = (GLuint *) get_pointer(dst, dstx, dsty); for (i = 0; i < height; i++) { for (j = 0; j < width; j++) row[j] = value; row += dst->pitch; } } break; default: assert(0); break; } } else { i915_fill_blit( i915_context(pipe), dst->cpp, dst->pitch, dst->buffer, dst_offset, dstx, dsty, width, height, value ); } } void i915_init_region_functions(struct i915_context *i915) { i915->pipe.region_idle = i915_region_idle; i915->pipe.region_map = i915_region_map; i915->pipe.region_unmap = i915_region_unmap; i915->pipe.region_alloc = i915_region_alloc; i915->pipe.region_release = i915_region_release; i915->pipe.region_data = i915_region_data; i915->pipe.region_copy = i915_region_copy; i915->pipe.region_fill = i915_region_fill; }