From 55753f59ae1754738bed4b0cb6546db65891f53f Mon Sep 17 00:00:00 2001 From: Marek Olšák Date: Thu, 10 Dec 2009 10:25:33 +0100 Subject: util: add blitter --- src/gallium/auxiliary/util/Makefile | 1 + src/gallium/auxiliary/util/SConscript | 1 + src/gallium/auxiliary/util/u_blitter.c | 605 +++++++++++++++++++++++++++++++++ src/gallium/auxiliary/util/u_blitter.h | 244 +++++++++++++ 4 files changed, 851 insertions(+) create mode 100644 src/gallium/auxiliary/util/u_blitter.c create mode 100644 src/gallium/auxiliary/util/u_blitter.h (limited to 'src') diff --git a/src/gallium/auxiliary/util/Makefile b/src/gallium/auxiliary/util/Makefile index c36a87a809..3ed90fd1b7 100644 --- a/src/gallium/auxiliary/util/Makefile +++ b/src/gallium/auxiliary/util/Makefile @@ -9,6 +9,7 @@ C_SOURCES = \ u_debug_symbol.c \ u_debug_stack.c \ u_blit.c \ + u_blitter.c \ u_cache.c \ u_cpu_detect.c \ u_dl.c \ diff --git a/src/gallium/auxiliary/util/SConscript b/src/gallium/auxiliary/util/SConscript index 6e34c3b7dd..2a546d19dc 100644 --- a/src/gallium/auxiliary/util/SConscript +++ b/src/gallium/auxiliary/util/SConscript @@ -23,6 +23,7 @@ util = env.ConvenienceLibrary( source = [ 'u_bitmask.c', 'u_blit.c', + 'u_blitter.c', 'u_cache.c', 'u_cpu_detect.c', 'u_debug.c', diff --git a/src/gallium/auxiliary/util/u_blitter.c b/src/gallium/auxiliary/util/u_blitter.c new file mode 100644 index 0000000000..e51a5dfc90 --- /dev/null +++ b/src/gallium/auxiliary/util/u_blitter.c @@ -0,0 +1,605 @@ +/************************************************************************** + * + * Copyright 2009 Marek Olšák + * + * 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. + * + **************************************************************************/ + +/** + * @file + * Blitter utility to facilitate acceleration of the clear, surface_copy, + * and surface_fill functions. + * + * @author Marek Olšák + */ + +#include "pipe/p_context.h" +#include "pipe/p_defines.h" +#include "pipe/p_inlines.h" +#include "pipe/p_shader_tokens.h" +#include "pipe/p_state.h" + +#include "util/u_memory.h" +#include "util/u_math.h" +#include "util/u_blitter.h" +#include "util/u_draw_quad.h" +#include "util/u_pack_color.h" +#include "util/u_rect.h" +#include "util/u_simple_shaders.h" +#include "util/u_texture.h" + +struct blitter_context_priv +{ + struct blitter_context blitter; + + struct pipe_context *pipe; /**< pipe context */ + struct pipe_buffer *vbuf; /**< quad */ + + float vertices[4][2][4]; /**< {pos, color} or {pos, texcoord} */ + + /* Constant state objects. */ + /* Vertex shaders. */ + void *vs_col; /**< Vertex shader which passes {pos, color} to the output */ + void *vs_tex; /**pipe = pipe; + + /* init state objects for them to be considered invalid */ + ctx->blitter.saved_fb_state.nr_cbufs = ~0; + ctx->blitter.saved_num_textures = ~0; + ctx->blitter.saved_num_sampler_states = ~0; + + /* blend state objects */ + memset(&blend, 0, sizeof(blend)); + ctx->blend_keep_color = pipe->create_blend_state(pipe, &blend); + + blend.colormask = PIPE_MASK_RGBA; + ctx->blend_write_color = pipe->create_blend_state(pipe, &blend); + + /* depth stencil alpha state objects */ + memset(&dsa, 0, sizeof(dsa)); + ctx->dsa_keep_depth_stencil = + pipe->create_depth_stencil_alpha_state(pipe, &dsa); + + dsa.depth.enabled = 1; + dsa.depth.writemask = 1; + dsa.depth.func = PIPE_FUNC_ALWAYS; + ctx->dsa_write_depth_keep_stencil = + pipe->create_depth_stencil_alpha_state(pipe, &dsa); + + dsa.stencil[0].enabled = 1; + dsa.stencil[0].func = PIPE_FUNC_ALWAYS; + dsa.stencil[0].fail_op = PIPE_STENCIL_OP_REPLACE; + dsa.stencil[0].zpass_op = PIPE_STENCIL_OP_REPLACE; + dsa.stencil[0].zfail_op = PIPE_STENCIL_OP_REPLACE; + dsa.stencil[0].valuemask = 0xff; + dsa.stencil[0].writemask = 0xff; + + /* create a depth stencil alpha state for each possible stencil clear + * value */ + for (i = 0; i < 0xff; i++) { + dsa.stencil[0].ref_value = i; + + ctx->dsa_write_depth_stencil[i] = + pipe->create_depth_stencil_alpha_state(pipe, &dsa); + } + + /* sampler state */ + memset(&sampler_state, 0, sizeof(sampler_state)); + sampler_state.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE; + sampler_state.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE; + sampler_state.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE; + + for (i = 0; i < 16; i++) { + sampler_state.lod_bias = i; + sampler_state.min_lod = i; + sampler_state.max_lod = i; + + ctx->sampler_state[i] = pipe->create_sampler_state(pipe, &sampler_state); + } + + /* rasterizer state */ + memset(&rs_state, 0, sizeof(rs_state)); + rs_state.front_winding = PIPE_WINDING_CW; + rs_state.cull_mode = PIPE_WINDING_NONE; + rs_state.bypass_vs_clip_and_viewport = 1; + rs_state.gl_rasterization_rules = 1; + ctx->rs_state = pipe->create_rasterizer_state(pipe, &rs_state); + + /* vertex shaders */ + { + const uint semantic_names[] = { TGSI_SEMANTIC_POSITION, + TGSI_SEMANTIC_COLOR }; + const uint semantic_indices[] = { 0, 0 }; + ctx->vs_col = + util_make_vertex_passthrough_shader(pipe, 2, semantic_names, + semantic_indices); + } + { + const uint semantic_names[] = { TGSI_SEMANTIC_POSITION, + TGSI_SEMANTIC_GENERIC }; + const uint semantic_indices[] = { 0, 0 }; + ctx->vs_tex = + util_make_vertex_passthrough_shader(pipe, 2, semantic_names, + semantic_indices); + } + + /* fragment shaders */ + ctx->fs_texfetch_col[PIPE_TEXTURE_1D] = + util_make_fragment_tex_shader(pipe, TGSI_TEXTURE_1D); + ctx->fs_texfetch_col[PIPE_TEXTURE_2D] = + util_make_fragment_tex_shader(pipe, TGSI_TEXTURE_2D); + ctx->fs_texfetch_col[PIPE_TEXTURE_3D] = + util_make_fragment_tex_shader(pipe, TGSI_TEXTURE_3D); + ctx->fs_texfetch_col[PIPE_TEXTURE_CUBE] = + util_make_fragment_tex_shader(pipe, TGSI_TEXTURE_CUBE); + + ctx->fs_texfetch_depth[PIPE_TEXTURE_1D] = + util_make_fragment_tex_shader_writedepth(pipe, TGSI_TEXTURE_1D); + ctx->fs_texfetch_depth[PIPE_TEXTURE_2D] = + util_make_fragment_tex_shader_writedepth(pipe, TGSI_TEXTURE_2D); + ctx->fs_texfetch_depth[PIPE_TEXTURE_3D] = + util_make_fragment_tex_shader_writedepth(pipe, TGSI_TEXTURE_3D); + ctx->fs_texfetch_depth[PIPE_TEXTURE_CUBE] = + util_make_fragment_tex_shader_writedepth(pipe, TGSI_TEXTURE_CUBE); + + max_render_targets = pipe->screen->get_param(pipe->screen, + PIPE_CAP_MAX_RENDER_TARGETS); + assert(max_render_targets <= 8); + for (i = 0; i < max_render_targets; i++) + ctx->fs_col[i] = util_make_fragment_clonecolor_shader(pipe, 1+i); + + /* set invariant vertex coordinates */ + for (i = 0; i < 4; i++) + ctx->vertices[i][0][3] = 1; /*v.w*/ + + /* create the vertex buffer */ + ctx->vbuf = pipe_buffer_create(ctx->pipe->screen, + 32, + PIPE_BUFFER_USAGE_VERTEX, + sizeof(ctx->vertices)); + + return &ctx->blitter; +} + +void util_blitter_destroy(struct blitter_context *blitter) +{ + struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter; + struct pipe_context *pipe = ctx->pipe; + int i; + + pipe->delete_blend_state(pipe, ctx->blend_write_color); + pipe->delete_blend_state(pipe, ctx->blend_keep_color); + pipe->delete_depth_stencil_alpha_state(pipe, ctx->dsa_keep_depth_stencil); + pipe->delete_depth_stencil_alpha_state(pipe, + ctx->dsa_write_depth_keep_stencil); + + for (i = 0; i < 0xff; i++) + pipe->delete_depth_stencil_alpha_state(pipe, + ctx->dsa_write_depth_stencil[i]); + + pipe->delete_rasterizer_state(pipe, ctx->rs_state); + pipe->delete_vs_state(pipe, ctx->vs_col); + pipe->delete_vs_state(pipe, ctx->vs_tex); + + for (i = 0; i < 4; i++) { + pipe->delete_fs_state(pipe, ctx->fs_texfetch_col[i]); + pipe->delete_fs_state(pipe, ctx->fs_texfetch_depth[i]); + } + for (i = 0; i < 8 && ctx->fs_col[i]; i++) + pipe->delete_fs_state(pipe, ctx->fs_col[i]); + + pipe_buffer_reference(&ctx->vbuf, NULL); + FREE(ctx); +} + +static void blitter_check_saved_CSOs(struct blitter_context_priv *ctx) +{ + /* make sure these CSOs have been saved */ + assert(ctx->blitter.saved_blend_state && + ctx->blitter.saved_dsa_state && + ctx->blitter.saved_rs_state && + ctx->blitter.saved_fs && + ctx->blitter.saved_vs); +} + +static void blitter_restore_CSOs(struct blitter_context_priv *ctx) +{ + struct pipe_context *pipe = ctx->pipe; + + /* restore the state objects which are always required to be saved */ + pipe->bind_blend_state(pipe, ctx->blitter.saved_blend_state); + pipe->bind_depth_stencil_alpha_state(pipe, ctx->blitter.saved_dsa_state); + pipe->bind_rasterizer_state(pipe, ctx->blitter.saved_rs_state); + pipe->bind_fs_state(pipe, ctx->blitter.saved_fs); + pipe->bind_vs_state(pipe, ctx->blitter.saved_vs); + + ctx->blitter.saved_blend_state = 0; + ctx->blitter.saved_dsa_state = 0; + ctx->blitter.saved_rs_state = 0; + ctx->blitter.saved_fs = 0; + ctx->blitter.saved_vs = 0; + + /* restore the state objects which are required to be saved before copy/fill + */ + if (ctx->blitter.saved_fb_state.nr_cbufs != ~0) { + pipe->set_framebuffer_state(pipe, &ctx->blitter.saved_fb_state); + ctx->blitter.saved_fb_state.nr_cbufs = ~0; + } + + if (ctx->blitter.saved_num_sampler_states != ~0) { + pipe->bind_fragment_sampler_states(pipe, + ctx->blitter.saved_num_sampler_states, + ctx->blitter.saved_sampler_states); + ctx->blitter.saved_num_sampler_states = ~0; + } + + if (ctx->blitter.saved_num_textures != ~0) { + pipe->set_fragment_sampler_textures(pipe, + ctx->blitter.saved_num_textures, + ctx->blitter.saved_textures); + ctx->blitter.saved_num_textures = ~0; + } +} + +static void blitter_set_rectangle(struct blitter_context_priv *ctx, + unsigned x1, unsigned y1, + unsigned x2, unsigned y2, + float depth) +{ + int i; + + /* set vertex positions */ + ctx->vertices[0][0][0] = x1; /*v0.x*/ + ctx->vertices[0][0][1] = y1; /*v0.y*/ + + ctx->vertices[1][0][0] = x2; /*v1.x*/ + ctx->vertices[1][0][1] = y1; /*v1.y*/ + + ctx->vertices[2][0][0] = x2; /*v2.x*/ + ctx->vertices[2][0][1] = y2; /*v2.y*/ + + ctx->vertices[3][0][0] = x1; /*v3.x*/ + ctx->vertices[3][0][1] = y2; /*v3.y*/ + + for (i = 0; i < 4; i++) + ctx->vertices[i][0][2] = depth; /*z*/ +} + +static void blitter_set_clear_color(struct blitter_context_priv *ctx, + const float *rgba) +{ + int i; + + for (i = 0; i < 4; i++) { + ctx->vertices[i][1][0] = rgba[0]; + ctx->vertices[i][1][1] = rgba[1]; + ctx->vertices[i][1][2] = rgba[2]; + ctx->vertices[i][1][3] = rgba[3]; + } +} + +static void blitter_set_texcoords_2d(struct blitter_context_priv *ctx, + struct pipe_surface *surf, + unsigned x1, unsigned y1, + unsigned x2, unsigned y2) +{ + int i; + float s1 = x1 / (float)surf->width; + float t1 = y1 / (float)surf->height; + float s2 = x2 / (float)surf->width; + float t2 = y2 / (float)surf->height; + + ctx->vertices[0][1][0] = s1; /*t0.s*/ + ctx->vertices[0][1][1] = t1; /*t0.t*/ + + ctx->vertices[1][1][0] = s2; /*t1.s*/ + ctx->vertices[1][1][1] = t1; /*t1.t*/ + + ctx->vertices[2][1][0] = s2; /*t2.s*/ + ctx->vertices[2][1][1] = t2; /*t2.t*/ + + ctx->vertices[3][1][0] = s1; /*t3.s*/ + ctx->vertices[3][1][1] = t2; /*t3.t*/ + + for (i = 0; i < 4; i++) { + ctx->vertices[i][1][2] = 0; /*r*/ + ctx->vertices[i][1][3] = 1; /*q*/ + } +} + +static void blitter_set_texcoords_3d(struct blitter_context_priv *ctx, + struct pipe_surface *surf, + unsigned x1, unsigned y1, + unsigned x2, unsigned y2) +{ + int i; + float depth = u_minify(surf->texture->depth0, surf->level); + float r = surf->zslice / depth; + + blitter_set_texcoords_2d(ctx, surf, x1, y1, x2, y2); + + for (i = 0; i < 4; i++) + ctx->vertices[i][1][2] = r; /*r*/ +} + +static void blitter_set_texcoords_cube(struct blitter_context_priv *ctx, + struct pipe_surface *surf, + unsigned x1, unsigned y1, + unsigned x2, unsigned y2) +{ + int i; + float s1 = x1 / (float)surf->width; + float t1 = y1 / (float)surf->height; + float s2 = x2 / (float)surf->width; + float t2 = y2 / (float)surf->height; + const float st[4][2] = { + {s1, t1}, {s2, t1}, {s2, t2}, {s1, t2} + }; + + util_map_texcoords2d_onto_cubemap(surf->face, + /* pointer, stride in floats */ + &st[0][0], 2, + &ctx->vertices[0][1][0], 8); + + for (i = 0; i < 4; i++) + ctx->vertices[i][1][3] = 1; /*q*/ +} + +static void blitter_draw_quad(struct blitter_context_priv *ctx) +{ + 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); +} diff --git a/src/gallium/auxiliary/util/u_blitter.h b/src/gallium/auxiliary/util/u_blitter.h new file mode 100644 index 0000000000..e4cbb5c5af --- /dev/null +++ b/src/gallium/auxiliary/util/u_blitter.h @@ -0,0 +1,244 @@ +/************************************************************************** + * + * Copyright 2009 Marek Olšák + * + * 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 -- cgit v1.2.3