diff options
Diffstat (limited to 'src/gallium/drivers/r300/r300_blit.c')
| -rw-r--r-- | src/gallium/drivers/r300/r300_blit.c | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/src/gallium/drivers/r300/r300_blit.c b/src/gallium/drivers/r300/r300_blit.c new file mode 100644 index 0000000000..c14414fff6 --- /dev/null +++ b/src/gallium/drivers/r300/r300_blit.c @@ -0,0 +1,130 @@ +/* + * Copyright 2009 Marek Olšák <maraeo@gmail.com> + * + * 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 + * on 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 + * THE AUTHOR(S) AND/OR THEIR 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 "r300_blit.h" +#include "r300_context.h" + +#include "util/u_rect.h" + +static void r300_blitter_save_states(struct r300_context* r300) +{ + util_blitter_save_blend(r300->blitter, r300->blend_state.state); + util_blitter_save_depth_stencil_alpha(r300->blitter, r300->dsa_state.state); + util_blitter_save_rasterizer(r300->blitter, r300->rs_state.state); + util_blitter_save_fragment_shader(r300->blitter, r300->fs); + util_blitter_save_vertex_shader(r300->blitter, r300->vs); +} + +/* Clear currently bound buffers. */ +void r300_clear(struct pipe_context* pipe, + unsigned buffers, + const float* rgba, + double depth, + unsigned stencil) +{ + /* XXX Implement fastfill. + * + * If fastfill is enabled, a few facts should be considered: + * + * 1) Zbuffer must be micro-tiled and whole microtiles must be + * written. + * + * 2) ZB_DEPTHCLEARVALUE is used to clear a zbuffer and Z Mask must be + * equal to 0. + * + * 3) RB3D_COLOR_CLEAR_VALUE is used to clear a colorbuffer and + * RB3D_COLOR_CHANNEL_MASK must be equal to 0. + * + * 4) ZB_CB_CLEAR can be used to make the ZB units help in clearing + * the colorbuffer. The color clear value is supplied through both + * RB3D_COLOR_CLEAR_VALUE and ZB_DEPTHCLEARVALUE, and the colorbuffer + * must be set in ZB_DEPTHOFFSET and ZB_DEPTHPITCH in addition to + * RB3D_COLOROFFSET and RB3D_COLORPITCH. It's obvious that the zbuffer + * will not be cleared and multiple render targets cannot be cleared + * this way either. + * + * 5) For 16-bit integer buffering, compression causes a hung with one or + * two samples and should not be used. + * + * 6) Fastfill must not be used if reading of compressed Z data is disabled + * and writing of compressed Z data is enabled (RD/WR_COMP_ENABLE), + * i.e. it cannot be used to compress the zbuffer. + * (what the hell does that mean and how does it fit in clearing + * the buffers?) + * + * - Marek + */ + + struct r300_context* r300 = r300_context(pipe); + + r300_blitter_save_states(r300); + + util_blitter_clear(r300->blitter, + r300->framebuffer_state.width, + r300->framebuffer_state.height, + r300->framebuffer_state.nr_cbufs, + buffers, rgba, depth, stencil); +} + +/* Copy a block of pixels from one surface to another. */ +void r300_surface_copy(struct pipe_context* pipe, + struct pipe_surface* dst, + unsigned dstx, unsigned dsty, + struct pipe_surface* src, + unsigned srcx, unsigned srcy, + unsigned width, unsigned height) +{ + struct r300_context* r300 = r300_context(pipe); + + /* Yeah we have to save all those states to ensure this blitter operation + * is really transparent. The states will be restored by the blitter once + * copying is done. */ + r300_blitter_save_states(r300); + util_blitter_save_framebuffer(r300->blitter, &r300->framebuffer_state); + + util_blitter_save_fragment_sampler_states( + r300->blitter, r300->sampler_count, (void**)r300->sampler_states); + + util_blitter_save_fragment_sampler_textures( + r300->blitter, r300->texture_count, + (struct pipe_texture**)r300->textures); + + /* Do a copy */ + util_blitter_copy(r300->blitter, + dst, dstx, dsty, src, srcx, srcy, width, height, TRUE); +} + +/* Fill a region of a surface with a constant value. */ +void r300_surface_fill(struct pipe_context* pipe, + struct pipe_surface* dst, + unsigned dstx, unsigned dsty, + unsigned width, unsigned height, + unsigned value) +{ + struct r300_context* r300 = r300_context(pipe); + + r300_blitter_save_states(r300); + util_blitter_save_framebuffer(r300->blitter, &r300->framebuffer_state); + + util_blitter_fill(r300->blitter, + dst, dstx, dsty, width, height, value); +} |