1 /* 2 * Copyright 2014, 2015 Red Hat. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * on the rights to use, copy, modify, merge, publish, distribute, sub 8 * license, and/or sell copies of the Software, and to permit persons to whom 9 * the Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 21 * USE OR OTHER DEALINGS IN THE SOFTWARE. 22 */ 23 24 /* the virgl hw tgsi vs what the current gallium want will diverge over time. 25 so add a transform stage to remove things we don't want to send unless 26 the receiver supports it. 27 */ 28 #include "tgsi/tgsi_transform.h" 29 #include "virgl_context.h" 30 struct virgl_transform_context { 31 struct tgsi_transform_context base; 32 }; 33 34 static void 35 virgl_tgsi_transform_declaration(struct tgsi_transform_context *ctx, 36 struct tgsi_full_declaration *decl) 37 { 38 switch (decl->Declaration.File) { 39 case TGSI_FILE_CONSTANT: 40 if (decl->Declaration.Dimension) { 41 if (decl->Dim.Index2D == 0) 42 decl->Declaration.Dimension = 0; 43 } 44 break; 45 default: 46 break; 47 } 48 ctx->emit_declaration(ctx, decl); 49 50 } 51 52 /* for now just strip out the new properties the remote doesn't understand 53 yet */ 54 static void 55 virgl_tgsi_transform_property(struct tgsi_transform_context *ctx, 56 struct tgsi_full_property *prop) 57 { 58 switch (prop->Property.PropertyName) { 59 case TGSI_PROPERTY_NUM_CLIPDIST_ENABLED: 60 case TGSI_PROPERTY_NUM_CULLDIST_ENABLED: 61 case TGSI_PROPERTY_NEXT_SHADER: 62 break; 63 default: 64 ctx->emit_property(ctx, prop); 65 break; 66 } 67 } 68 69 static void 70 virgl_tgsi_transform_instruction(struct tgsi_transform_context *ctx, 71 struct tgsi_full_instruction *inst) 72 { 73 if (inst->Instruction.Precise) 74 inst->Instruction.Precise = 0; 75 76 for (unsigned i = 0; i < inst->Instruction.NumSrcRegs; i++) { 77 if (inst->Src[i].Register.File == TGSI_FILE_CONSTANT && 78 inst->Src[i].Register.Dimension && 79 inst->Src[i].Dimension.Index == 0) 80 inst->Src[i].Register.Dimension = 0; 81 } 82 ctx->emit_instruction(ctx, inst); 83 } 84 85 struct tgsi_token *virgl_tgsi_transform(const struct tgsi_token *tokens_in) 86 { 87 88 struct virgl_transform_context transform; 89 const uint newLen = tgsi_num_tokens(tokens_in); 90 struct tgsi_token *new_tokens; 91 92 new_tokens = tgsi_alloc_tokens(newLen); 93 if (!new_tokens) 94 return NULL; 95 96 memset(&transform, 0, sizeof(transform)); 97 transform.base.transform_declaration = virgl_tgsi_transform_declaration; 98 transform.base.transform_property = virgl_tgsi_transform_property; 99 transform.base.transform_instruction = virgl_tgsi_transform_instruction; 100 tgsi_transform_shader(tokens_in, new_tokens, newLen, &transform.base); 101 102 return new_tokens; 103 } 104