| /********************************************************** |
| * Copyright 2008-2009 VMware, Inc. 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, sublicense, 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 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 |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * 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_inlines.h" |
| #include "pipe/p_defines.h" |
| #include "util/u_format.h" |
| #include "util/u_math.h" |
| #include "util/u_memory.h" |
| #include "util/u_bitmask.h" |
| #include "translate/translate.h" |
| #include "tgsi/tgsi_ureg.h" |
| |
| #include "svga_context.h" |
| #include "svga_state.h" |
| #include "svga_cmd.h" |
| #include "svga_tgsi.h" |
| |
| #include "svga_hw_reg.h" |
| |
| /*********************************************************************** |
| */ |
| |
| |
| static INLINE int compare_vs_keys( const struct svga_vs_compile_key *a, |
| const struct svga_vs_compile_key *b ) |
| { |
| unsigned keysize = svga_vs_key_size( a ); |
| return memcmp( a, b, keysize ); |
| } |
| |
| |
| static struct svga_shader_result *search_vs_key( struct svga_vertex_shader *vs, |
| const struct svga_vs_compile_key *key ) |
| { |
| struct svga_shader_result *result = vs->base.results; |
| |
| assert(key); |
| |
| for ( ; result; result = result->next) { |
| if (compare_vs_keys( key, &result->key.vkey ) == 0) |
| return result; |
| } |
| |
| return NULL; |
| } |
| |
| |
| /** |
| * If we fail to compile a vertex shader we'll use a dummy/fallback shader |
| * that simply emits a (0,0,0,1) vertex position. |
| */ |
| static const struct tgsi_token * |
| get_dummy_vertex_shader(void) |
| { |
| static const float zero[4] = { 0.0, 0.0, 0.0, 1.0 }; |
| struct ureg_program *ureg; |
| const struct tgsi_token *tokens; |
| struct ureg_src src; |
| struct ureg_dst dst; |
| unsigned num_tokens; |
| |
| ureg = ureg_create(TGSI_PROCESSOR_VERTEX); |
| if (!ureg) |
| return NULL; |
| |
| dst = ureg_DECL_output(ureg, TGSI_SEMANTIC_POSITION, 0); |
| src = ureg_DECL_immediate(ureg, zero, 4); |
| ureg_MOV(ureg, dst, src); |
| ureg_END(ureg); |
| |
| tokens = ureg_get_tokens(ureg, &num_tokens); |
| |
| ureg_destroy(ureg); |
| |
| return tokens; |
| } |
| |
| |
| static enum pipe_error compile_vs( struct svga_context *svga, |
| struct svga_vertex_shader *vs, |
| const struct svga_vs_compile_key *key, |
| struct svga_shader_result **out_result ) |
| { |
| struct svga_shader_result *result; |
| enum pipe_error ret = PIPE_ERROR; |
| |
| result = svga_translate_vertex_program( vs, key ); |
| if (result == NULL) { |
| /* some problem during translation, try the dummy shader */ |
| const struct tgsi_token *dummy = get_dummy_vertex_shader(); |
| if (!dummy) { |
| ret = PIPE_ERROR_OUT_OF_MEMORY; |
| goto fail; |
| } |
| debug_printf("Failed to compile vertex shader, using dummy shader instead.\n"); |
| FREE((void *) vs->base.tokens); |
| vs->base.tokens = dummy; |
| result = svga_translate_vertex_program(vs, key); |
| if (result == NULL) { |
| ret = PIPE_ERROR; |
| goto fail; |
| } |
| } |
| |
| result->id = util_bitmask_add(svga->vs_bm); |
| if(result->id == UTIL_BITMASK_INVALID_INDEX) { |
| ret = PIPE_ERROR_OUT_OF_MEMORY; |
| goto fail; |
| } |
| |
| ret = SVGA3D_DefineShader(svga->swc, |
| result->id, |
| SVGA3D_SHADERTYPE_VS, |
| result->tokens, |
| result->nr_tokens * sizeof result->tokens[0]); |
| if (ret != PIPE_OK) |
| goto fail; |
| |
| *out_result = result; |
| result->next = vs->base.results; |
| vs->base.results = result; |
| return PIPE_OK; |
| |
| fail: |
| if (result) { |
| if (result->id != UTIL_BITMASK_INVALID_INDEX) |
| util_bitmask_clear( svga->vs_bm, result->id ); |
| svga_destroy_shader_result( result ); |
| } |
| return ret; |
| } |
| |
| /* SVGA_NEW_PRESCALE, SVGA_NEW_RAST, SVGA_NEW_FS |
| */ |
| static void |
| make_vs_key(struct svga_context *svga, struct svga_vs_compile_key *key) |
| { |
| memset(key, 0, sizeof *key); |
| key->need_prescale = svga->state.hw_clear.prescale.enabled; |
| key->allow_psiz = svga->curr.rast->templ.point_size_per_vertex; |
| |
| /* SVGA_NEW_FS */ |
| key->fs_generic_inputs = svga->curr.fs->generic_inputs; |
| } |
| |
| |
| |
| static enum pipe_error |
| emit_hw_vs(struct svga_context *svga, unsigned dirty) |
| { |
| struct svga_shader_result *result = NULL; |
| unsigned id = SVGA3D_INVALID_ID; |
| enum pipe_error ret = PIPE_OK; |
| |
| /* SVGA_NEW_NEED_SWTNL */ |
| if (!svga->state.sw.need_swtnl) { |
| struct svga_vertex_shader *vs = svga->curr.vs; |
| struct svga_vs_compile_key key; |
| |
| make_vs_key( svga, &key ); |
| |
| result = search_vs_key( vs, &key ); |
| if (!result) { |
| ret = compile_vs( svga, vs, &key, &result ); |
| if (ret != PIPE_OK) |
| return ret; |
| } |
| |
| assert (result); |
| id = result->id; |
| } |
| |
| if (result != svga->state.hw_draw.vs) { |
| ret = SVGA3D_SetShader(svga->swc, |
| SVGA3D_SHADERTYPE_VS, |
| id ); |
| if (ret != PIPE_OK) |
| return ret; |
| |
| svga->dirty |= SVGA_NEW_VS_RESULT; |
| svga->state.hw_draw.vs = result; |
| } |
| |
| return PIPE_OK; |
| } |
| |
| struct svga_tracked_state svga_hw_vs = |
| { |
| "vertex shader (hwtnl)", |
| (SVGA_NEW_VS | |
| SVGA_NEW_FS | |
| SVGA_NEW_PRESCALE | |
| SVGA_NEW_NEED_SWTNL), |
| emit_hw_vs |
| }; |