diff options
author | Brian <brian.paul@tungstengraphics.com> | 2008-03-18 17:04:59 -0600 |
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committer | Brian <brian.paul@tungstengraphics.com> | 2008-03-18 17:18:11 -0600 |
commit | 0abe462128a8a0725e006751e553f89fee2d7fa7 (patch) | |
tree | fa3169183960f4671a063e3fdf5cf44e9c4b40c1 /src/gallium/auxiliary/util/u_blit.c | |
parent | 18f9fa9e71abdd999e49ef78729bfe3d92304312 (diff) |
gallium: new pixel blit code
Copy rectangular region from one surface to another w/ scaling.
Disables most fragment operations.
Diffstat (limited to 'src/gallium/auxiliary/util/u_blit.c')
-rw-r--r-- | src/gallium/auxiliary/util/u_blit.c | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_blit.c b/src/gallium/auxiliary/util/u_blit.c new file mode 100644 index 0000000000..4b4ab8185f --- /dev/null +++ b/src/gallium/auxiliary/util/u_blit.c @@ -0,0 +1,276 @@ +/************************************************************************** + * + * Copyright 2008 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. + * + **************************************************************************/ + +/** + * @file + * Copy/blit pixel rect between surfaces + * + * @author Brian Paul + */ + + +#include "pipe/p_context.h" +#include "pipe/p_debug.h" +#include "pipe/p_defines.h" +#include "pipe/p_inlines.h" +#include "pipe/p_util.h" +#include "pipe/p_winsys.h" +#include "pipe/p_shader_tokens.h" + +#include "util/u_draw_quad.h" +#include "util/u_blit.h" +#include "util/u_simple_shaders.h" + + +struct blit_state +{ + struct pipe_context *pipe; + + void *blend; + void *depthstencil; + void *rasterizer; + void *samplers[2]; /* one for linear, one for nearest sampling */ + + /*struct pipe_viewport_state viewport;*/ + struct pipe_sampler_state *vs; + struct pipe_sampler_state *fs; +}; + + +/** + * Create state object for blit. + * Intended to be created once and re-used for many blit() calls. + */ +struct blit_state * +util_create_blit(struct pipe_context *pipe) +{ + struct pipe_blend_state blend; + struct pipe_depth_stencil_alpha_state depthstencil; + struct pipe_rasterizer_state rasterizer; + struct blit_state *ctx; + struct pipe_sampler_state sampler; + + ctx = CALLOC_STRUCT(blit_state); + if (!ctx) + return NULL; + + ctx->pipe = pipe; + + /* we don't use blending, but need to set valid values */ + memset(&blend, 0, sizeof(blend)); + blend.rgb_src_factor = PIPE_BLENDFACTOR_ONE; + blend.alpha_src_factor = PIPE_BLENDFACTOR_ONE; + blend.rgb_dst_factor = PIPE_BLENDFACTOR_ZERO; + blend.alpha_dst_factor = PIPE_BLENDFACTOR_ZERO; + blend.colormask = PIPE_MASK_RGBA; + ctx->blend = pipe->create_blend_state(pipe, &blend); + + /* depth/stencil/alpha */ + memset(&depthstencil, 0, sizeof(depthstencil)); + ctx->depthstencil = pipe->create_depth_stencil_alpha_state(pipe, &depthstencil); + + /* rasterizer */ + memset(&rasterizer, 0, sizeof(rasterizer)); + rasterizer.front_winding = PIPE_WINDING_CW; + rasterizer.cull_mode = PIPE_WINDING_NONE; + rasterizer.bypass_clipping = 1; /* bypasses viewport too */ + /*rasterizer.bypass_vs = 1;*/ + ctx->rasterizer = pipe->create_rasterizer_state(pipe, &rasterizer); + + /* samplers */ + memset(&sampler, 0, sizeof(sampler)); + sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE; + sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE; + sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE; + sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE; + sampler.min_img_filter = PIPE_TEX_MIPFILTER_NEAREST; + sampler.mag_img_filter = PIPE_TEX_MIPFILTER_NEAREST; + sampler.normalized_coords = 1; + ctx->samplers[0] = pipe->create_sampler_state(pipe, &sampler); + + sampler.min_img_filter = PIPE_TEX_MIPFILTER_LINEAR; + sampler.mag_img_filter = PIPE_TEX_MIPFILTER_LINEAR; + ctx->samplers[1] = pipe->create_sampler_state(pipe, &sampler); + + +#if 0 + /* viewport */ + ctx->viewport.scale[0] = 1.0; + ctx->viewport.scale[1] = 1.0; + ctx->viewport.scale[2] = 1.0; + ctx->viewport.scale[3] = 1.0; + ctx->viewport.translate[0] = 0.0; + ctx->viewport.translate[1] = 0.0; + ctx->viewport.translate[2] = 0.0; + ctx->viewport.translate[3] = 0.0; +#endif + + /* vertex shader */ + { + const uint semantic_names[] = { TGSI_SEMANTIC_POSITION, + TGSI_SEMANTIC_GENERIC }; + const uint semantic_indexes[] = { 0, 0 }; + ctx->vs = util_make_vertex_passthrough_shader(pipe, 2, semantic_names, + semantic_indexes); + } + + /* fragment shader */ + ctx->fs = util_make_fragment_tex_shader(pipe); + + return ctx; +} + + +/** + * Destroy a blit context + */ +void +util_destroy_blit(struct blit_state *ctx) +{ + struct pipe_context *pipe = ctx->pipe; + + pipe->delete_blend_state(pipe, ctx->blend); + pipe->delete_depth_stencil_alpha_state(pipe, ctx->depthstencil); + pipe->delete_rasterizer_state(pipe, ctx->rasterizer); + pipe->delete_sampler_state(pipe, ctx->samplers[0]); + pipe->delete_sampler_state(pipe, ctx->samplers[1]); + + pipe->delete_vs_state(pipe, ctx->vs); + pipe->delete_fs_state(pipe, ctx->fs); + + FREE(ctx); +} + + +/** + * Copy pixel block from src surface to dst surface. + * Overlapping regions are acceptable. + * XXX need some control over blitting Z and/or stencil. + */ +void +util_blit_pixels(struct blit_state *ctx, + struct pipe_surface *src, + int srcX0, int srcY0, + int srcX1, int srcY1, + struct pipe_surface *dst, + int dstX0, int dstY0, + int dstX1, int dstY1, + float z, uint filter) +{ + struct pipe_context *pipe = ctx->pipe; + struct pipe_screen *screen = pipe->screen; + struct pipe_texture texTemp, *tex; + struct pipe_surface *texSurf; + struct pipe_framebuffer_state fb; + const int srcW = abs(srcX1 - srcX0); + const int srcH = abs(srcY1 - srcY0); + const int srcLeft = MIN2(srcX0, srcX1); + const int srcTop = MIN2(srcY0, srcY1); + + assert(filter == PIPE_TEX_MIPFILTER_NEAREST || + filter == PIPE_TEX_MIPFILTER_LINEAR); + + if (srcLeft != srcX0) { + /* left-right flip */ + int tmp = dstX0; + dstX0 = dstX1; + dstX1 = tmp; + } + + if (srcTop != srcY0) { + /* up-down flip */ + int tmp = dstY0; + dstY0 = dstY1; + dstY1 = tmp; + } + + /* + * XXX for now we're always creating a temporary texture. + * Strictly speaking that's not always needed. + */ + + /* create temp texture */ + memset(&texTemp, 0, sizeof(texTemp)); + texTemp.target = PIPE_TEXTURE_2D; + texTemp.format = src->format; + texTemp.last_level = 0; + texTemp.width[0] = srcW; + texTemp.height[0] = srcH; + texTemp.depth[0] = 1; + texTemp.compressed = 0; + texTemp.cpp = pf_get_bits(src->format) / 8; + + tex = screen->texture_create(screen, &texTemp); + if (!tex) + return; + + texSurf = screen->get_tex_surface(screen, tex, 0, 0, 0); + + /* load temp texture */ + pipe->surface_copy(pipe, FALSE, + texSurf, 0, 0, /* dest */ + src, srcLeft, srcTop, /* src */ + srcW, srcH); /* size */ + + /* drawing dest */ + memset(&fb, 0, sizeof(fb)); + fb.num_cbufs = 1; + fb.cbufs[0] = dst; + pipe->set_framebuffer_state(pipe, &fb); + + /* sampler */ + if (filter == PIPE_TEX_MIPFILTER_NEAREST) + pipe->bind_sampler_states(pipe, 1, &ctx->samplers[0]); + else + pipe->bind_sampler_states(pipe, 1, &ctx->samplers[1]); + + /* texture */ + pipe->set_sampler_textures(pipe, 1, &tex); + + /* shaders */ + pipe->bind_fs_state(pipe, ctx->fs); + pipe->bind_vs_state(pipe, ctx->vs); + + /* misc state */ + pipe->bind_blend_state(pipe, ctx->blend); + pipe->bind_depth_stencil_alpha_state(pipe, ctx->depthstencil); + pipe->bind_rasterizer_state(pipe, ctx->rasterizer); + + /* draw quad */ + util_draw_texquad(pipe, dstX0, dstY0, dstX1, dstY1, z); + + /* unbind */ + pipe->set_sampler_textures(pipe, 0, NULL); + pipe->bind_sampler_states(pipe, 0, NULL); + + /* free stuff */ + pipe_surface_reference(&texSurf, NULL); + screen->texture_release(screen, &tex); + + /* Note: caller must restore pipe/gallium state at this time */ +} + |