diff options
Diffstat (limited to 'src/gallium/drivers/llvmpipe/lp_state_derived.c')
| -rw-r--r-- | src/gallium/drivers/llvmpipe/lp_state_derived.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_state_derived.c b/src/gallium/drivers/llvmpipe/lp_state_derived.c new file mode 100644 index 0000000000..d20a5218d4 --- /dev/null +++ b/src/gallium/drivers/llvmpipe/lp_state_derived.c @@ -0,0 +1,198 @@ +/************************************************************************** + * + * Copyright 2003 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. + * + **************************************************************************/ + +#include "util/u_math.h" +#include "util/u_memory.h" +#include "pipe/p_shader_tokens.h" +#include "draw/draw_context.h" +#include "draw/draw_vertex.h" +#include "draw/draw_private.h" +#include "lp_context.h" +#include "lp_screen.h" +#include "lp_setup.h" +#include "lp_state.h" + + + +/** + * The vertex info describes how to convert the post-transformed vertices + * (simple float[][4]) used by the 'draw' module into vertices for + * rasterization. + * + * This function validates the vertex layout. + */ +static void +compute_vertex_info(struct llvmpipe_context *llvmpipe) +{ + const struct lp_fragment_shader *lpfs = llvmpipe->fs; + struct vertex_info *vinfo = &llvmpipe->vertex_info; + struct lp_shader_input *inputs = llvmpipe->inputs; + unsigned vs_index; + uint i; + + /* + * Match FS inputs against VS outputs, emitting the necessary attributes. + */ + + vinfo->num_attribs = 0; + + vs_index = draw_find_shader_output(llvmpipe->draw, + TGSI_SEMANTIC_POSITION, + 0); + + draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_PERSPECTIVE, vs_index); + + for (i = 0; i < lpfs->info.num_inputs; i++) { + /* + * Search for each input in current vs output: + */ + + vs_index = draw_find_shader_output(llvmpipe->draw, + lpfs->info.input_semantic_name[i], + lpfs->info.input_semantic_index[i]); + + /* This can be pre-computed, except for flatshade: + */ + inputs[i].usage_mask = lpfs->info.input_usage_mask[i]; + + switch (lpfs->info.input_interpolate[i]) { + case TGSI_INTERPOLATE_CONSTANT: + inputs[i].interp = LP_INTERP_CONSTANT; + break; + case TGSI_INTERPOLATE_LINEAR: + inputs[i].interp = LP_INTERP_LINEAR; + break; + case TGSI_INTERPOLATE_PERSPECTIVE: + inputs[i].interp = LP_INTERP_PERSPECTIVE; + break; + default: + assert(0); + break; + } + + switch (lpfs->info.input_semantic_name[i]) { + case TGSI_SEMANTIC_FACE: + inputs[i].interp = LP_INTERP_FACING; + break; + case TGSI_SEMANTIC_POSITION: + /* Position was already emitted above + */ + inputs[i].interp = LP_INTERP_POSITION; + inputs[i].src_index = 0; + continue; + case TGSI_SEMANTIC_COLOR: + /* Colors are linearly inputs[i].interpolated in the fragment shader + * even when flatshading is active. This just tells the + * setup module to use coefficients with ddx==0 and + * ddy==0. + */ + if (llvmpipe->rasterizer->flatshade) + inputs[i].interp = LP_INTERP_CONSTANT; + break; + + default: + break; + } + + /* + * Emit the requested fs attribute for all but position. + */ + + inputs[i].src_index = vinfo->num_attribs; + draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_PERSPECTIVE, vs_index); + } + llvmpipe->num_inputs = lpfs->info.num_inputs; + + draw_compute_vertex_size(vinfo); + + lp_setup_set_vertex_info(llvmpipe->setup, vinfo); + + lp_setup_set_fs_inputs(llvmpipe->setup, + inputs, + lpfs->info.num_inputs); +} + + +/** + * Handle state changes. + * Called just prior to drawing anything (pipe::draw_arrays(), etc). + * + * Hopefully this will remain quite simple, otherwise need to pull in + * something like the state tracker mechanism. + */ +void llvmpipe_update_derived( struct llvmpipe_context *llvmpipe ) +{ + struct llvmpipe_screen *lp_screen = llvmpipe_screen(llvmpipe->pipe.screen); + + /* Check for updated textures. + */ + if (llvmpipe->tex_timestamp != lp_screen->timestamp) { + llvmpipe->tex_timestamp = lp_screen->timestamp; + llvmpipe->dirty |= LP_NEW_SAMPLER_VIEW; + } + + if (llvmpipe->dirty & (LP_NEW_RASTERIZER | + LP_NEW_FS | + LP_NEW_VS)) + compute_vertex_info( llvmpipe ); + + if (llvmpipe->dirty & (LP_NEW_FS | + LP_NEW_BLEND | + LP_NEW_SCISSOR | + LP_NEW_DEPTH_STENCIL_ALPHA | + LP_NEW_RASTERIZER | + LP_NEW_SAMPLER | + LP_NEW_SAMPLER_VIEW | + LP_NEW_QUERY)) + llvmpipe_update_fs( llvmpipe ); + + if (llvmpipe->dirty & LP_NEW_BLEND_COLOR) + lp_setup_set_blend_color(llvmpipe->setup, + &llvmpipe->blend_color); + + if (llvmpipe->dirty & LP_NEW_SCISSOR) + lp_setup_set_scissor(llvmpipe->setup, &llvmpipe->scissor); + + if (llvmpipe->dirty & LP_NEW_DEPTH_STENCIL_ALPHA) { + lp_setup_set_alpha_ref_value(llvmpipe->setup, + llvmpipe->depth_stencil->alpha.ref_value); + lp_setup_set_stencil_ref_values(llvmpipe->setup, + llvmpipe->stencil_ref.ref_value); + } + + if (llvmpipe->dirty & LP_NEW_CONSTANTS) + lp_setup_set_fs_constants(llvmpipe->setup, + llvmpipe->constants[PIPE_SHADER_FRAGMENT][0]); + + if (llvmpipe->dirty & LP_NEW_SAMPLER_VIEW) + lp_setup_set_fragment_sampler_views(llvmpipe->setup, + llvmpipe->num_fragment_sampler_views, + llvmpipe->fragment_sampler_views); + + llvmpipe->dirty = 0; +} + |