util: add blitter
This commit is contained in:
Marek Olšák
committed by
Keith Whitwell
Keith Whitwell
parent
4c61022b4a
commit
55753f59ae
@@ -9,6 +9,7 @@ C_SOURCES = \
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u_debug_symbol.c \
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u_debug_stack.c \
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u_blit.c \
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u_blitter.c \
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u_cache.c \
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u_cpu_detect.c \
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u_dl.c \
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@@ -23,6 +23,7 @@ util = env.ConvenienceLibrary(
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source = [
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'u_bitmask.c',
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'u_blit.c',
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'u_blitter.c',
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'u_cache.c',
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'u_cpu_detect.c',
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'u_debug.c',
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@@ -0,0 +1,605 @@
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/**************************************************************************
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*
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* Copyright 2009 Marek Olšák <maraeo@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* @file
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* Blitter utility to facilitate acceleration of the clear, surface_copy,
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* and surface_fill functions.
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*
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* @author Marek Olšák
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*/
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#include "pipe/p_context.h"
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#include "pipe/p_defines.h"
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#include "pipe/p_inlines.h"
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#include "pipe/p_shader_tokens.h"
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#include "pipe/p_state.h"
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#include "util/u_memory.h"
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#include "util/u_math.h"
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#include "util/u_blitter.h"
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#include "util/u_draw_quad.h"
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#include "util/u_pack_color.h"
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#include "util/u_rect.h"
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#include "util/u_simple_shaders.h"
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#include "util/u_texture.h"
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struct blitter_context_priv
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{
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struct blitter_context blitter;
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struct pipe_context *pipe; /**< pipe context */
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struct pipe_buffer *vbuf; /**< quad */
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float vertices[4][2][4]; /**< {pos, color} or {pos, texcoord} */
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/* Constant state objects. */
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/* Vertex shaders. */
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void *vs_col; /**< Vertex shader which passes {pos, color} to the output */
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void *vs_tex; /**<Vertex shader which passes {pos, texcoord} to the output.*/
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/* Fragment shaders. */
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void *fs_col[8]; /**< FS which outputs colors to 1-8 color buffers */
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void *fs_texfetch_col[4]; /**< FS which outputs a color from a texture */
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void *fs_texfetch_depth[4]; /**< FS which outputs a depth from a texture,
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where the index is PIPE_TEXTURE_* to be sampled */
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/* Blend state. */
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void *blend_write_color; /**< blend state with writemask of RGBA */
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void *blend_keep_color; /**< blend state with writemask of 0 */
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/* Depth stencil alpha state. */
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void *dsa_write_depth_stencil[0xff]; /**< indices are stencil clear values */
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void *dsa_write_depth_keep_stencil;
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void *dsa_keep_depth_stencil;
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/* Other state. */
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void *sampler_state[16]; /**< sampler state for clamping to a miplevel */
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void *rs_state; /**< rasterizer state */
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};
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struct blitter_context *util_blitter_create(struct pipe_context *pipe)
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{
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struct blitter_context_priv *ctx;
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struct pipe_blend_state blend;
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struct pipe_depth_stencil_alpha_state dsa;
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struct pipe_rasterizer_state rs_state;
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struct pipe_sampler_state sampler_state;
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unsigned i, max_render_targets;
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ctx = CALLOC_STRUCT(blitter_context_priv);
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if (!ctx)
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return NULL;
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ctx->pipe = pipe;
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/* init state objects for them to be considered invalid */
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ctx->blitter.saved_fb_state.nr_cbufs = ~0;
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ctx->blitter.saved_num_textures = ~0;
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ctx->blitter.saved_num_sampler_states = ~0;
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/* blend state objects */
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memset(&blend, 0, sizeof(blend));
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ctx->blend_keep_color = pipe->create_blend_state(pipe, &blend);
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blend.colormask = PIPE_MASK_RGBA;
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ctx->blend_write_color = pipe->create_blend_state(pipe, &blend);
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/* depth stencil alpha state objects */
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memset(&dsa, 0, sizeof(dsa));
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ctx->dsa_keep_depth_stencil =
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pipe->create_depth_stencil_alpha_state(pipe, &dsa);
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dsa.depth.enabled = 1;
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dsa.depth.writemask = 1;
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dsa.depth.func = PIPE_FUNC_ALWAYS;
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ctx->dsa_write_depth_keep_stencil =
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pipe->create_depth_stencil_alpha_state(pipe, &dsa);
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dsa.stencil[0].enabled = 1;
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dsa.stencil[0].func = PIPE_FUNC_ALWAYS;
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dsa.stencil[0].fail_op = PIPE_STENCIL_OP_REPLACE;
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dsa.stencil[0].zpass_op = PIPE_STENCIL_OP_REPLACE;
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dsa.stencil[0].zfail_op = PIPE_STENCIL_OP_REPLACE;
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dsa.stencil[0].valuemask = 0xff;
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dsa.stencil[0].writemask = 0xff;
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/* create a depth stencil alpha state for each possible stencil clear
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* value */
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for (i = 0; i < 0xff; i++) {
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dsa.stencil[0].ref_value = i;
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ctx->dsa_write_depth_stencil[i] =
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pipe->create_depth_stencil_alpha_state(pipe, &dsa);
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}
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/* sampler state */
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memset(&sampler_state, 0, sizeof(sampler_state));
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sampler_state.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
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sampler_state.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
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sampler_state.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
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for (i = 0; i < 16; i++) {
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sampler_state.lod_bias = i;
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sampler_state.min_lod = i;
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sampler_state.max_lod = i;
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ctx->sampler_state[i] = pipe->create_sampler_state(pipe, &sampler_state);
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}
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/* rasterizer state */
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memset(&rs_state, 0, sizeof(rs_state));
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rs_state.front_winding = PIPE_WINDING_CW;
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rs_state.cull_mode = PIPE_WINDING_NONE;
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rs_state.bypass_vs_clip_and_viewport = 1;
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rs_state.gl_rasterization_rules = 1;
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ctx->rs_state = pipe->create_rasterizer_state(pipe, &rs_state);
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/* vertex shaders */
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{
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const uint semantic_names[] = { TGSI_SEMANTIC_POSITION,
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TGSI_SEMANTIC_COLOR };
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const uint semantic_indices[] = { 0, 0 };
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ctx->vs_col =
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util_make_vertex_passthrough_shader(pipe, 2, semantic_names,
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semantic_indices);
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}
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{
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const uint semantic_names[] = { TGSI_SEMANTIC_POSITION,
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TGSI_SEMANTIC_GENERIC };
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const uint semantic_indices[] = { 0, 0 };
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ctx->vs_tex =
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util_make_vertex_passthrough_shader(pipe, 2, semantic_names,
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semantic_indices);
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}
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/* fragment shaders */
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ctx->fs_texfetch_col[PIPE_TEXTURE_1D] =
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util_make_fragment_tex_shader(pipe, TGSI_TEXTURE_1D);
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ctx->fs_texfetch_col[PIPE_TEXTURE_2D] =
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util_make_fragment_tex_shader(pipe, TGSI_TEXTURE_2D);
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ctx->fs_texfetch_col[PIPE_TEXTURE_3D] =
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util_make_fragment_tex_shader(pipe, TGSI_TEXTURE_3D);
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ctx->fs_texfetch_col[PIPE_TEXTURE_CUBE] =
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util_make_fragment_tex_shader(pipe, TGSI_TEXTURE_CUBE);
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ctx->fs_texfetch_depth[PIPE_TEXTURE_1D] =
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util_make_fragment_tex_shader_writedepth(pipe, TGSI_TEXTURE_1D);
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ctx->fs_texfetch_depth[PIPE_TEXTURE_2D] =
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util_make_fragment_tex_shader_writedepth(pipe, TGSI_TEXTURE_2D);
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ctx->fs_texfetch_depth[PIPE_TEXTURE_3D] =
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util_make_fragment_tex_shader_writedepth(pipe, TGSI_TEXTURE_3D);
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ctx->fs_texfetch_depth[PIPE_TEXTURE_CUBE] =
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util_make_fragment_tex_shader_writedepth(pipe, TGSI_TEXTURE_CUBE);
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max_render_targets = pipe->screen->get_param(pipe->screen,
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PIPE_CAP_MAX_RENDER_TARGETS);
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assert(max_render_targets <= 8);
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for (i = 0; i < max_render_targets; i++)
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ctx->fs_col[i] = util_make_fragment_clonecolor_shader(pipe, 1+i);
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/* set invariant vertex coordinates */
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for (i = 0; i < 4; i++)
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ctx->vertices[i][0][3] = 1; /*v.w*/
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/* create the vertex buffer */
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ctx->vbuf = pipe_buffer_create(ctx->pipe->screen,
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32,
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PIPE_BUFFER_USAGE_VERTEX,
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sizeof(ctx->vertices));
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return &ctx->blitter;
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}
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void util_blitter_destroy(struct blitter_context *blitter)
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{
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struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter;
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struct pipe_context *pipe = ctx->pipe;
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int i;
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pipe->delete_blend_state(pipe, ctx->blend_write_color);
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pipe->delete_blend_state(pipe, ctx->blend_keep_color);
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pipe->delete_depth_stencil_alpha_state(pipe, ctx->dsa_keep_depth_stencil);
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pipe->delete_depth_stencil_alpha_state(pipe,
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ctx->dsa_write_depth_keep_stencil);
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for (i = 0; i < 0xff; i++)
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pipe->delete_depth_stencil_alpha_state(pipe,
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ctx->dsa_write_depth_stencil[i]);
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pipe->delete_rasterizer_state(pipe, ctx->rs_state);
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pipe->delete_vs_state(pipe, ctx->vs_col);
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pipe->delete_vs_state(pipe, ctx->vs_tex);
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for (i = 0; i < 4; i++) {
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pipe->delete_fs_state(pipe, ctx->fs_texfetch_col[i]);
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pipe->delete_fs_state(pipe, ctx->fs_texfetch_depth[i]);
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}
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for (i = 0; i < 8 && ctx->fs_col[i]; i++)
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pipe->delete_fs_state(pipe, ctx->fs_col[i]);
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pipe_buffer_reference(&ctx->vbuf, NULL);
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FREE(ctx);
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}
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static void blitter_check_saved_CSOs(struct blitter_context_priv *ctx)
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{
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/* make sure these CSOs have been saved */
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assert(ctx->blitter.saved_blend_state &&
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ctx->blitter.saved_dsa_state &&
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ctx->blitter.saved_rs_state &&
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ctx->blitter.saved_fs &&
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ctx->blitter.saved_vs);
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}
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static void blitter_restore_CSOs(struct blitter_context_priv *ctx)
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{
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struct pipe_context *pipe = ctx->pipe;
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/* restore the state objects which are always required to be saved */
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pipe->bind_blend_state(pipe, ctx->blitter.saved_blend_state);
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pipe->bind_depth_stencil_alpha_state(pipe, ctx->blitter.saved_dsa_state);
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pipe->bind_rasterizer_state(pipe, ctx->blitter.saved_rs_state);
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pipe->bind_fs_state(pipe, ctx->blitter.saved_fs);
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pipe->bind_vs_state(pipe, ctx->blitter.saved_vs);
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ctx->blitter.saved_blend_state = 0;
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ctx->blitter.saved_dsa_state = 0;
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ctx->blitter.saved_rs_state = 0;
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ctx->blitter.saved_fs = 0;
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ctx->blitter.saved_vs = 0;
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/* restore the state objects which are required to be saved before copy/fill
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*/
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if (ctx->blitter.saved_fb_state.nr_cbufs != ~0) {
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pipe->set_framebuffer_state(pipe, &ctx->blitter.saved_fb_state);
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ctx->blitter.saved_fb_state.nr_cbufs = ~0;
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}
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if (ctx->blitter.saved_num_sampler_states != ~0) {
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pipe->bind_fragment_sampler_states(pipe,
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ctx->blitter.saved_num_sampler_states,
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ctx->blitter.saved_sampler_states);
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ctx->blitter.saved_num_sampler_states = ~0;
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}
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if (ctx->blitter.saved_num_textures != ~0) {
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pipe->set_fragment_sampler_textures(pipe,
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ctx->blitter.saved_num_textures,
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ctx->blitter.saved_textures);
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ctx->blitter.saved_num_textures = ~0;
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}
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}
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static void blitter_set_rectangle(struct blitter_context_priv *ctx,
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unsigned x1, unsigned y1,
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unsigned x2, unsigned y2,
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float depth)
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{
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int i;
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/* set vertex positions */
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ctx->vertices[0][0][0] = x1; /*v0.x*/
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ctx->vertices[0][0][1] = y1; /*v0.y*/
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ctx->vertices[1][0][0] = x2; /*v1.x*/
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ctx->vertices[1][0][1] = y1; /*v1.y*/
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ctx->vertices[2][0][0] = x2; /*v2.x*/
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ctx->vertices[2][0][1] = y2; /*v2.y*/
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ctx->vertices[3][0][0] = x1; /*v3.x*/
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ctx->vertices[3][0][1] = y2; /*v3.y*/
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for (i = 0; i < 4; i++)
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ctx->vertices[i][0][2] = depth; /*z*/
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}
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static void blitter_set_clear_color(struct blitter_context_priv *ctx,
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const float *rgba)
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{
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int i;
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for (i = 0; i < 4; i++) {
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ctx->vertices[i][1][0] = rgba[0];
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ctx->vertices[i][1][1] = rgba[1];
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ctx->vertices[i][1][2] = rgba[2];
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ctx->vertices[i][1][3] = rgba[3];
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}
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}
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static void blitter_set_texcoords_2d(struct blitter_context_priv *ctx,
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struct pipe_surface *surf,
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unsigned x1, unsigned y1,
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unsigned x2, unsigned y2)
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{
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int i;
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float s1 = x1 / (float)surf->width;
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float t1 = y1 / (float)surf->height;
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float s2 = x2 / (float)surf->width;
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float t2 = y2 / (float)surf->height;
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ctx->vertices[0][1][0] = s1; /*t0.s*/
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ctx->vertices[0][1][1] = t1; /*t0.t*/
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ctx->vertices[1][1][0] = s2; /*t1.s*/
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ctx->vertices[1][1][1] = t1; /*t1.t*/
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ctx->vertices[2][1][0] = s2; /*t2.s*/
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ctx->vertices[2][1][1] = t2; /*t2.t*/
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ctx->vertices[3][1][0] = s1; /*t3.s*/
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ctx->vertices[3][1][1] = t2; /*t3.t*/
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for (i = 0; i < 4; i++) {
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ctx->vertices[i][1][2] = 0; /*r*/
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ctx->vertices[i][1][3] = 1; /*q*/
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}
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}
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static void blitter_set_texcoords_3d(struct blitter_context_priv *ctx,
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struct pipe_surface *surf,
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unsigned x1, unsigned y1,
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unsigned x2, unsigned y2)
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{
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int i;
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float depth = u_minify(surf->texture->depth0, surf->level);
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float r = surf->zslice / depth;
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blitter_set_texcoords_2d(ctx, surf, x1, y1, x2, y2);
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for (i = 0; i < 4; i++)
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ctx->vertices[i][1][2] = r; /*r*/
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}
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static void blitter_set_texcoords_cube(struct blitter_context_priv *ctx,
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struct pipe_surface *surf,
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unsigned x1, unsigned y1,
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unsigned x2, unsigned y2)
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{
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int i;
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float s1 = x1 / (float)surf->width;
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float t1 = y1 / (float)surf->height;
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float s2 = x2 / (float)surf->width;
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float t2 = y2 / (float)surf->height;
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const float st[4][2] = {
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{s1, t1}, {s2, t1}, {s2, t2}, {s1, t2}
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};
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util_map_texcoords2d_onto_cubemap(surf->face,
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/* pointer, stride in floats */
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&st[0][0], 2,
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&ctx->vertices[0][1][0], 8);
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for (i = 0; i < 4; i++)
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ctx->vertices[i][1][3] = 1; /*q*/
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}
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static void blitter_draw_quad(struct blitter_context_priv *ctx)
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{
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struct blitter_context *blitter = &ctx->blitter;
|
||||
struct pipe_context *pipe = ctx->pipe;
|
||||
|
||||
if (blitter->draw_quad) {
|
||||
blitter->draw_quad(pipe, &ctx->vertices[0][0][0]);
|
||||
} else {
|
||||
/* write vertices and draw them */
|
||||
pipe_buffer_write(pipe->screen, ctx->vbuf,
|
||||
0, sizeof(ctx->vertices), ctx->vertices);
|
||||
|
||||
util_draw_vertex_buffer(ctx->pipe, ctx->vbuf, 0, PIPE_PRIM_TRIANGLE_FAN,
|
||||
4, /* verts */
|
||||
2); /* attribs/vert */
|
||||
}
|
||||
}
|
||||
|
||||
void util_blitter_clear(struct blitter_context *blitter,
|
||||
unsigned width, unsigned height,
|
||||
unsigned num_cbufs,
|
||||
unsigned clear_buffers,
|
||||
const float *rgba,
|
||||
double depth, unsigned stencil)
|
||||
{
|
||||
struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter;
|
||||
struct pipe_context *pipe = ctx->pipe;
|
||||
|
||||
assert(num_cbufs <= 8);
|
||||
|
||||
blitter_check_saved_CSOs(ctx);
|
||||
|
||||
/* bind CSOs */
|
||||
if (clear_buffers & PIPE_CLEAR_COLOR)
|
||||
pipe->bind_blend_state(pipe, ctx->blend_write_color);
|
||||
else
|
||||
pipe->bind_blend_state(pipe, ctx->blend_keep_color);
|
||||
|
||||
if (clear_buffers & PIPE_CLEAR_DEPTHSTENCIL)
|
||||
pipe->bind_depth_stencil_alpha_state(pipe,
|
||||
ctx->dsa_write_depth_stencil[stencil&0xff]);
|
||||
else
|
||||
pipe->bind_depth_stencil_alpha_state(pipe, ctx->dsa_keep_depth_stencil);
|
||||
|
||||
pipe->bind_rasterizer_state(pipe, ctx->rs_state);
|
||||
pipe->bind_fs_state(pipe, ctx->fs_col[num_cbufs ? num_cbufs-1 : 0]);
|
||||
pipe->bind_vs_state(pipe, ctx->vs_col);
|
||||
|
||||
blitter_set_clear_color(ctx, rgba);
|
||||
blitter_set_rectangle(ctx, 0, 0, width, height, depth);
|
||||
blitter_draw_quad(ctx);
|
||||
blitter_restore_CSOs(ctx);
|
||||
}
|
||||
|
||||
void util_blitter_copy(struct blitter_context *blitter,
|
||||
struct pipe_surface *dst,
|
||||
unsigned dstx, unsigned dsty,
|
||||
struct pipe_surface *src,
|
||||
unsigned srcx, unsigned srcy,
|
||||
unsigned width, unsigned height,
|
||||
boolean ignore_stencil)
|
||||
{
|
||||
struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter;
|
||||
struct pipe_context *pipe = ctx->pipe;
|
||||
struct pipe_screen *screen = pipe->screen;
|
||||
struct pipe_framebuffer_state fb_state;
|
||||
boolean is_stencil, is_depth;
|
||||
unsigned dst_tex_usage;
|
||||
|
||||
/* give up if textures are not set */
|
||||
assert(dst->texture && src->texture);
|
||||
if (!dst->texture || !src->texture)
|
||||
return;
|
||||
|
||||
is_depth = pf_get_component_bits(src->format, PIPE_FORMAT_COMP_Z) != 0;
|
||||
is_stencil = pf_get_component_bits(src->format, PIPE_FORMAT_COMP_S) != 0;
|
||||
dst_tex_usage = is_depth || is_stencil ? PIPE_TEXTURE_USAGE_DEPTH_STENCIL :
|
||||
PIPE_TEXTURE_USAGE_RENDER_TARGET;
|
||||
|
||||
/* check if we can sample from and render to the surfaces */
|
||||
/* (assuming copying a stencil buffer is not possible) */
|
||||
if ((!ignore_stencil && is_stencil) ||
|
||||
!screen->is_format_supported(screen, dst->format, dst->texture->target,
|
||||
dst_tex_usage, 0) ||
|
||||
!screen->is_format_supported(screen, src->format, src->texture->target,
|
||||
PIPE_TEXTURE_USAGE_SAMPLER, 0)) {
|
||||
util_surface_copy(pipe, FALSE, dst, dstx, dsty, src, srcx, srcy,
|
||||
width, height);
|
||||
return;
|
||||
}
|
||||
|
||||
/* check whether the states are properly saved */
|
||||
blitter_check_saved_CSOs(ctx);
|
||||
assert(blitter->saved_fb_state.nr_cbufs != ~0);
|
||||
assert(blitter->saved_num_textures != ~0);
|
||||
assert(blitter->saved_num_sampler_states != ~0);
|
||||
assert(src->texture->target < 4);
|
||||
|
||||
/* bind CSOs */
|
||||
fb_state.width = dst->width;
|
||||
fb_state.height = dst->height;
|
||||
|
||||
if (is_depth) {
|
||||
pipe->bind_blend_state(pipe, ctx->blend_keep_color);
|
||||
pipe->bind_depth_stencil_alpha_state(pipe,
|
||||
ctx->dsa_write_depth_keep_stencil);
|
||||
pipe->bind_fs_state(pipe, ctx->fs_texfetch_depth[src->texture->target]);
|
||||
|
||||
fb_state.nr_cbufs = 0;
|
||||
fb_state.zsbuf = dst;
|
||||
} else {
|
||||
pipe->bind_blend_state(pipe, ctx->blend_write_color);
|
||||
pipe->bind_depth_stencil_alpha_state(pipe, ctx->dsa_keep_depth_stencil);
|
||||
pipe->bind_fs_state(pipe, ctx->fs_texfetch_col[src->texture->target]);
|
||||
|
||||
fb_state.nr_cbufs = 1;
|
||||
fb_state.cbufs[0] = dst;
|
||||
fb_state.zsbuf = 0;
|
||||
}
|
||||
pipe->bind_rasterizer_state(pipe, ctx->rs_state);
|
||||
pipe->bind_vs_state(pipe, ctx->vs_tex);
|
||||
pipe->bind_fragment_sampler_states(pipe, 1, &ctx->sampler_state[src->level]);
|
||||
pipe->set_fragment_sampler_textures(pipe, 1, &src->texture);
|
||||
pipe->set_framebuffer_state(pipe, &fb_state);
|
||||
|
||||
/* set texture coordinates */
|
||||
switch (src->texture->target) {
|
||||
case PIPE_TEXTURE_1D:
|
||||
case PIPE_TEXTURE_2D:
|
||||
blitter_set_texcoords_2d(ctx, src, srcx, srcy,
|
||||
srcx+width, srcy+height);
|
||||
break;
|
||||
case PIPE_TEXTURE_3D:
|
||||
blitter_set_texcoords_3d(ctx, src, srcx, srcy,
|
||||
srcx+width, srcy+height);
|
||||
break;
|
||||
case PIPE_TEXTURE_CUBE:
|
||||
blitter_set_texcoords_cube(ctx, src, srcx, srcy,
|
||||
srcx+width, srcy+height);
|
||||
break;
|
||||
}
|
||||
|
||||
blitter_set_rectangle(ctx, dstx, dsty, dstx+width, dsty+height, 0);
|
||||
blitter_draw_quad(ctx);
|
||||
blitter_restore_CSOs(ctx);
|
||||
}
|
||||
|
||||
void util_blitter_fill(struct blitter_context *blitter,
|
||||
struct pipe_surface *dst,
|
||||
unsigned dstx, unsigned dsty,
|
||||
unsigned width, unsigned height,
|
||||
unsigned value)
|
||||
{
|
||||
struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter;
|
||||
struct pipe_context *pipe = ctx->pipe;
|
||||
struct pipe_screen *screen = pipe->screen;
|
||||
struct pipe_framebuffer_state fb_state;
|
||||
float rgba[4];
|
||||
ubyte ub_rgba[4] = {0};
|
||||
union util_color color;
|
||||
int i;
|
||||
|
||||
assert(dst->texture);
|
||||
if (!dst->texture)
|
||||
return;
|
||||
|
||||
/* check if we can render to the surface */
|
||||
if (pf_is_depth_or_stencil(dst->format) || /* unlikely, but you never know */
|
||||
!screen->is_format_supported(screen, dst->format, dst->texture->target,
|
||||
PIPE_TEXTURE_USAGE_RENDER_TARGET, 0)) {
|
||||
util_surface_fill(pipe, dst, dstx, dsty, width, height, value);
|
||||
return;
|
||||
}
|
||||
|
||||
/* unpack the color */
|
||||
color.ui = value;
|
||||
util_unpack_color_ub(dst->format, &color,
|
||||
ub_rgba, ub_rgba+1, ub_rgba+2, ub_rgba+3);
|
||||
for (i = 0; i < 4; i++)
|
||||
rgba[i] = ubyte_to_float(ub_rgba[i]);
|
||||
|
||||
/* check the saved state */
|
||||
blitter_check_saved_CSOs(ctx);
|
||||
assert(blitter->saved_fb_state.nr_cbufs != ~0);
|
||||
|
||||
/* bind CSOs */
|
||||
pipe->bind_blend_state(pipe, ctx->blend_write_color);
|
||||
pipe->bind_depth_stencil_alpha_state(pipe, ctx->dsa_keep_depth_stencil);
|
||||
pipe->bind_rasterizer_state(pipe, ctx->rs_state);
|
||||
pipe->bind_fs_state(pipe, ctx->fs_col[0]);
|
||||
pipe->bind_vs_state(pipe, ctx->vs_col);
|
||||
|
||||
/* set a framebuffer state */
|
||||
fb_state.width = dst->width;
|
||||
fb_state.height = dst->height;
|
||||
fb_state.nr_cbufs = 1;
|
||||
fb_state.cbufs[0] = dst;
|
||||
fb_state.zsbuf = 0;
|
||||
pipe->set_framebuffer_state(pipe, &fb_state);
|
||||
|
||||
blitter_set_clear_color(ctx, rgba);
|
||||
blitter_set_rectangle(ctx, 0, 0, width, height, 0);
|
||||
blitter_draw_quad(ctx);
|
||||
blitter_restore_CSOs(ctx);
|
||||
}
|
||||
@@ -0,0 +1,244 @@
|
||||
/**************************************************************************
|
||||
*
|
||||
* 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 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.
|
||||
*
|
||||
**************************************************************************/
|
||||
|
||||
#ifndef U_BLITTER_H
|
||||
#define U_BLITTER_H
|
||||
|
||||
#include "util/u_memory.h"
|
||||
|
||||
#include "pipe/p_state.h"
|
||||
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
struct pipe_context;
|
||||
|
||||
struct blitter_context
|
||||
{
|
||||
/**
|
||||
* Draw a quad.
|
||||
*
|
||||
* The pipe driver can set this to provide a more efficient way of drawing
|
||||
* a quad. If it's NULL, the quad is drawn using a vertex buffer.
|
||||
*
|
||||
* There are always 4 vertices with interleaved vertex elements of type
|
||||
* RGBA32F. See the vertex shader _output_ semantics to know what those are.
|
||||
* The primitive type is always PIPE_PRIM_TRIANGLE_FAN and VS/clip/viewport
|
||||
* is bypasssed.
|
||||
*/
|
||||
void (*draw_quad)(struct pipe_context *pipe,
|
||||
const float *vertices);
|
||||
|
||||
/* Private members, really. */
|
||||
void *saved_blend_state; /**< blend state */
|
||||
void *saved_dsa_state; /**< depth stencil alpha state */
|
||||
void *saved_rs_state; /**< rasterizer state */
|
||||
void *saved_fs, *saved_vs; /**< fragment shader, vertex shader */
|
||||
|
||||
struct pipe_framebuffer_state saved_fb_state; /**< framebuffer state */
|
||||
|
||||
int saved_num_sampler_states;
|
||||
void *saved_sampler_states[32];
|
||||
|
||||
int saved_num_textures;
|
||||
struct pipe_texture *saved_textures[32]; /* is 32 enough? */
|
||||
};
|
||||
|
||||
/**
|
||||
* Create a blitter context.
|
||||
*/
|
||||
struct blitter_context *util_blitter_create(struct pipe_context *pipe);
|
||||
|
||||
/**
|
||||
* Destroy a blitter context.
|
||||
*/
|
||||
void util_blitter_destroy(struct blitter_context *blitter);
|
||||
|
||||
/*
|
||||
* These CSOs must be saved before any of the following functions is called:
|
||||
* - blend state
|
||||
* - depth stencil alpha state
|
||||
* - rasterizer state
|
||||
* - vertex shader
|
||||
* - fragment shader
|
||||
*/
|
||||
|
||||
/**
|
||||
* Clear a specified set of currently bound buffers to specified values.
|
||||
*/
|
||||
void util_blitter_clear(struct blitter_context *blitter,
|
||||
unsigned width, unsigned height,
|
||||
unsigned num_cbufs,
|
||||
unsigned clear_buffers,
|
||||
const float *rgba,
|
||||
double depth, unsigned stencil);
|
||||
|
||||
/**
|
||||
* Copy a block of pixels from one surface to another.
|
||||
*
|
||||
* You can copy from any color format to any other color format provided
|
||||
* the former can be sampled and the latter can be rendered to. Otherwise,
|
||||
* a software fallback path is taken and both surfaces must be of the same
|
||||
* format.
|
||||
*
|
||||
* The same holds for depth-stencil formats with the exception that stencil
|
||||
* cannot be copied unless you set ignore_stencil to FALSE. In that case,
|
||||
* a software fallback path is taken and both surfaces must be of the same
|
||||
* format.
|
||||
*
|
||||
* Use pipe_screen->is_format_supported to know your options.
|
||||
*
|
||||
* These states must be saved in the blitter in addition to the state objects
|
||||
* already required to be saved:
|
||||
* - framebuffer state
|
||||
* - fragment sampler states
|
||||
* - fragment sampler textures
|
||||
*/
|
||||
void util_blitter_copy(struct blitter_context *blitter,
|
||||
struct pipe_surface *dst,
|
||||
unsigned dstx, unsigned dsty,
|
||||
struct pipe_surface *src,
|
||||
unsigned srcx, unsigned srcy,
|
||||
unsigned width, unsigned height,
|
||||
boolean ignore_stencil);
|
||||
|
||||
/**
|
||||
* Fill a region of a surface with a constant value.
|
||||
*
|
||||
* If the surface cannot be rendered to or it's a depth-stencil format,
|
||||
* a software fallback path is taken.
|
||||
*
|
||||
* These states must be saved in the blitter in addition to the state objects
|
||||
* already required to be saved:
|
||||
* - framebuffer state
|
||||
*/
|
||||
void util_blitter_fill(struct blitter_context *blitter,
|
||||
struct pipe_surface *dst,
|
||||
unsigned dstx, unsigned dsty,
|
||||
unsigned width, unsigned height,
|
||||
unsigned value);
|
||||
|
||||
/**
|
||||
* Copy all pixels from one surface to another.
|
||||
*
|
||||
* The rules are the same as in util_blitter_copy with the addition that
|
||||
* surfaces must have the same size.
|
||||
*/
|
||||
static INLINE
|
||||
void util_blitter_copy_surface(struct blitter_context *blitter,
|
||||
struct pipe_surface *dst,
|
||||
struct pipe_surface *src,
|
||||
boolean ignore_stencil)
|
||||
{
|
||||
assert(dst->width == src->width && dst->height == src->height);
|
||||
|
||||
util_blitter_copy(blitter, dst, 0, 0, src, 0, 0, src->width, src->height,
|
||||
ignore_stencil);
|
||||
}
|
||||
|
||||
|
||||
/* The functions below should be used to save currently bound constant state
|
||||
* objects inside a driver. The objects are automatically restored at the end
|
||||
* of the util_blitter_{clear, fill, copy, copy_surface} functions and then
|
||||
* forgotten.
|
||||
*
|
||||
* CSOs not listed here are not affected by util_blitter. */
|
||||
|
||||
static INLINE
|
||||
void util_blitter_save_blend(struct blitter_context *blitter,
|
||||
void *state)
|
||||
{
|
||||
blitter->saved_blend_state = state;
|
||||
}
|
||||
|
||||
static INLINE
|
||||
void util_blitter_save_depth_stencil_alpha(struct blitter_context *blitter,
|
||||
void *state)
|
||||
{
|
||||
blitter->saved_dsa_state = state;
|
||||
}
|
||||
|
||||
static INLINE
|
||||
void util_blitter_save_rasterizer(struct blitter_context *blitter,
|
||||
void *state)
|
||||
{
|
||||
blitter->saved_rs_state = state;
|
||||
}
|
||||
|
||||
static INLINE
|
||||
void util_blitter_save_fragment_shader(struct blitter_context *blitter,
|
||||
void *fs)
|
||||
{
|
||||
blitter->saved_fs = fs;
|
||||
}
|
||||
|
||||
static INLINE
|
||||
void util_blitter_save_vertex_shader(struct blitter_context *blitter,
|
||||
void *vs)
|
||||
{
|
||||
blitter->saved_vs = vs;
|
||||
}
|
||||
|
||||
static INLINE
|
||||
void util_blitter_save_framebuffer(struct blitter_context *blitter,
|
||||
struct pipe_framebuffer_state *state)
|
||||
{
|
||||
blitter->saved_fb_state = *state;
|
||||
}
|
||||
|
||||
static INLINE
|
||||
void util_blitter_save_fragment_sampler_states(
|
||||
struct blitter_context *blitter,
|
||||
int num_sampler_states,
|
||||
void **sampler_states)
|
||||
{
|
||||
assert(num_sampler_states <= Elements(blitter->saved_sampler_states));
|
||||
|
||||
blitter->saved_num_sampler_states = num_sampler_states;
|
||||
memcpy(blitter->saved_sampler_states, sampler_states,
|
||||
num_sampler_states * sizeof(void *));
|
||||
}
|
||||
|
||||
static INLINE
|
||||
void util_blitter_save_fragment_sampler_textures(
|
||||
struct blitter_context *blitter,
|
||||
int num_textures,
|
||||
struct pipe_texture **textures)
|
||||
{
|
||||
assert(num_textures <= Elements(blitter->saved_textures));
|
||||
|
||||
blitter->saved_num_textures = num_textures;
|
||||
memcpy(blitter->saved_textures, textures,
|
||||
num_textures * sizeof(struct pipe_texture *));
|
||||
}
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif
|
||||
Reference in New Issue
Block a user