gallium: new mipmap generation code
Based on code from Mesa's state tracker. Still need to implement fallbacks for those texture formats which can't generally be rendered to.
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/**************************************************************************
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*
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* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* @file
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* Mipmap generation utility
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*
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* @author Brian Paul
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*/
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#include "pipe/p_context.h"
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#include "pipe/p_defines.h"
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#include "pipe/p_inlines.h"
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#include "pipe/p_util.h"
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#include "pipe/p_winsys.h"
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#include "pipe/p_shader_tokens.h"
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#include "util/u_draw_quad.h"
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#include "util/u_gen_mipmap.h"
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#include "tgsi/util/tgsi_build.h"
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#include "tgsi/util/tgsi_dump.h"
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#include "tgsi/util/tgsi_parse.h"
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/**
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* Make simple fragment shader:
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* TEX OUT[0], IN[0], SAMP[0], 2D;
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* END;
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*/
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static void
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make_fragment_shader(struct gen_mipmap_state *ctx)
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{
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struct pipe_context *pipe = ctx->pipe;
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uint maxTokens = 100;
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struct tgsi_token *tokens;
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struct tgsi_header *header;
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struct tgsi_processor *processor;
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struct tgsi_full_declaration decl;
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struct tgsi_full_instruction inst;
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const uint procType = TGSI_PROCESSOR_FRAGMENT;
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uint ti = 0;
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struct pipe_shader_state shader;
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tokens = (struct tgsi_token *) malloc(maxTokens * sizeof(tokens[0]));
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/* shader header
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*/
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*(struct tgsi_version *) &tokens[0] = tgsi_build_version();
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header = (struct tgsi_header *) &tokens[1];
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*header = tgsi_build_header();
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processor = (struct tgsi_processor *) &tokens[2];
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*processor = tgsi_build_processor( procType, header );
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ti = 3;
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/* declare TEX[0] input */
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decl = tgsi_default_full_declaration();
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decl.Declaration.File = TGSI_FILE_INPUT;
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decl.Declaration.Semantic = 1;
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decl.Semantic.SemanticName = TGSI_SEMANTIC_GENERIC;
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decl.Semantic.SemanticIndex = 0;
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/* XXX this could be linear... */
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decl.Declaration.Interpolate = 1;
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decl.Interpolation.Interpolate = TGSI_INTERPOLATE_PERSPECTIVE;
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decl.u.DeclarationRange.First =
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decl.u.DeclarationRange.Last = 0;
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ti += tgsi_build_full_declaration(&decl,
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&tokens[ti],
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header,
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maxTokens - ti);
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/* declare color[0] output */
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decl = tgsi_default_full_declaration();
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decl.Declaration.File = TGSI_FILE_OUTPUT;
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decl.Declaration.Semantic = 1;
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decl.Semantic.SemanticName = TGSI_SEMANTIC_COLOR;
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decl.Semantic.SemanticIndex = 0;
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decl.u.DeclarationRange.First =
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decl.u.DeclarationRange.Last = 0;
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ti += tgsi_build_full_declaration(&decl,
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&tokens[ti],
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header,
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maxTokens - ti);
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/* declare sampler */
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decl = tgsi_default_full_declaration();
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decl.Declaration.File = TGSI_FILE_SAMPLER;
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decl.u.DeclarationRange.First =
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decl.u.DeclarationRange.Last = 0;
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ti += tgsi_build_full_declaration(&decl,
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&tokens[ti],
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header,
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maxTokens - ti);
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/* TEX instruction */
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inst = tgsi_default_full_instruction();
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inst.Instruction.Opcode = TGSI_OPCODE_TEX;
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inst.Instruction.NumDstRegs = 1;
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inst.FullDstRegisters[0].DstRegister.File = TGSI_FILE_OUTPUT;
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inst.FullDstRegisters[0].DstRegister.Index = 0;
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inst.Instruction.NumSrcRegs = 2;
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inst.InstructionExtTexture.Texture = TGSI_TEXTURE_2D;
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inst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_INPUT;
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inst.FullSrcRegisters[0].SrcRegister.Index = 0;
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inst.FullSrcRegisters[1].SrcRegister.File = TGSI_FILE_SAMPLER;
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inst.FullSrcRegisters[1].SrcRegister.Index = 0;
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ti += tgsi_build_full_instruction(&inst,
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&tokens[ti],
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header,
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maxTokens - ti );
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/* END instruction */
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inst = tgsi_default_full_instruction();
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inst.Instruction.Opcode = TGSI_OPCODE_END;
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inst.Instruction.NumDstRegs = 0;
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inst.Instruction.NumSrcRegs = 0;
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ti += tgsi_build_full_instruction(&inst,
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&tokens[ti],
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header,
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maxTokens - ti );
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#if 0 /*debug*/
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tgsi_dump(tokens, 0);
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#endif
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shader.tokens = tokens;
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ctx->fs = pipe->create_fs_state(pipe, &shader);
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}
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/**
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* Make simple fragment shader:
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* MOV OUT[0], IN[0];
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* MOV OUT[1], IN[1];
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* END;
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*
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* XXX eliminate this when vertex passthrough-mode is more solid.
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*/
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static void
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make_vertex_shader(struct gen_mipmap_state *ctx)
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{
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struct pipe_context *pipe = ctx->pipe;
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uint maxTokens = 100;
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struct tgsi_token *tokens;
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struct tgsi_header *header;
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struct tgsi_processor *processor;
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struct tgsi_full_declaration decl;
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struct tgsi_full_instruction inst;
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const uint procType = TGSI_PROCESSOR_VERTEX;
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uint ti = 0;
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struct pipe_shader_state shader;
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tokens = (struct tgsi_token *) malloc(maxTokens * sizeof(tokens[0]));
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/* shader header
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*/
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*(struct tgsi_version *) &tokens[0] = tgsi_build_version();
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header = (struct tgsi_header *) &tokens[1];
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*header = tgsi_build_header();
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processor = (struct tgsi_processor *) &tokens[2];
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*processor = tgsi_build_processor( procType, header );
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ti = 3;
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/* declare POS input */
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decl = tgsi_default_full_declaration();
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decl.Declaration.File = TGSI_FILE_INPUT;
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/*
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decl.Declaration.Semantic = 1;
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decl.Semantic.SemanticName = TGSI_SEMANTIC_POSITION;
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decl.Semantic.SemanticIndex = 0;
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*/
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decl.u.DeclarationRange.First =
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decl.u.DeclarationRange.Last = 0;
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ti += tgsi_build_full_declaration(&decl,
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&tokens[ti],
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header,
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maxTokens - ti);
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/* declare TEX[0] input */
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decl = tgsi_default_full_declaration();
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decl.Declaration.File = TGSI_FILE_INPUT;
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/*
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decl.Declaration.Semantic = 1;
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decl.Semantic.SemanticName = TGSI_SEMANTIC_GENERIC;
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decl.Semantic.SemanticIndex = 0;
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*/
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decl.u.DeclarationRange.First =
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decl.u.DeclarationRange.Last = 1;
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ti += tgsi_build_full_declaration(&decl,
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&tokens[ti],
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header,
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maxTokens - ti);
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/* declare POS output */
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decl = tgsi_default_full_declaration();
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decl.Declaration.File = TGSI_FILE_OUTPUT;
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decl.Declaration.Semantic = 1;
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decl.Semantic.SemanticName = TGSI_SEMANTIC_POSITION;
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decl.Semantic.SemanticIndex = 0;
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decl.u.DeclarationRange.First =
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decl.u.DeclarationRange.Last = 0;
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ti += tgsi_build_full_declaration(&decl,
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&tokens[ti],
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header,
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maxTokens - ti);
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/* declare TEX[0] output */
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decl = tgsi_default_full_declaration();
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decl.Declaration.File = TGSI_FILE_OUTPUT;
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decl.Declaration.Semantic = 1;
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decl.Semantic.SemanticName = TGSI_SEMANTIC_GENERIC;
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decl.Semantic.SemanticIndex = 0;
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decl.u.DeclarationRange.First =
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decl.u.DeclarationRange.Last = 1;
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ti += tgsi_build_full_declaration(&decl,
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&tokens[ti],
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header,
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maxTokens - ti);
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/* MOVE out[0], in[0]; # POS */
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inst = tgsi_default_full_instruction();
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inst.Instruction.Opcode = TGSI_OPCODE_MOV;
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inst.Instruction.NumDstRegs = 1;
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inst.FullDstRegisters[0].DstRegister.File = TGSI_FILE_OUTPUT;
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inst.FullDstRegisters[0].DstRegister.Index = 0;
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inst.Instruction.NumSrcRegs = 1;
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inst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_INPUT;
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inst.FullSrcRegisters[0].SrcRegister.Index = 0;
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ti += tgsi_build_full_instruction(&inst,
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&tokens[ti],
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header,
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maxTokens - ti );
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/* MOVE out[1], in[1]; # TEX */
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inst = tgsi_default_full_instruction();
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inst.Instruction.Opcode = TGSI_OPCODE_MOV;
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inst.Instruction.NumDstRegs = 1;
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inst.FullDstRegisters[0].DstRegister.File = TGSI_FILE_OUTPUT;
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inst.FullDstRegisters[0].DstRegister.Index = 1;
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inst.Instruction.NumSrcRegs = 1;
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inst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_INPUT;
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inst.FullSrcRegisters[0].SrcRegister.Index = 1;
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ti += tgsi_build_full_instruction(&inst,
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&tokens[ti],
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header,
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maxTokens - ti );
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/* END instruction */
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inst = tgsi_default_full_instruction();
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inst.Instruction.Opcode = TGSI_OPCODE_END;
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inst.Instruction.NumDstRegs = 0;
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inst.Instruction.NumSrcRegs = 0;
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ti += tgsi_build_full_instruction(&inst,
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&tokens[ti],
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header,
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maxTokens - ti );
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#if 0 /*debug*/
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tgsi_dump(tokens, 0);
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#endif
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shader.tokens = tokens;
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ctx->vs = pipe->create_vs_state(pipe, &shader);
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}
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/**
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* Create a mipmap generation context.
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* The idea is to create one of these and re-use it each time we need to
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* generate a mipmap.
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*/
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struct gen_mipmap_state *
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util_create_gen_mipmap(struct pipe_context *pipe)
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{
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struct pipe_blend_state blend;
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struct pipe_depth_stencil_alpha_state depthstencil;
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struct pipe_rasterizer_state rasterizer;
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struct gen_mipmap_state *ctx;
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ctx = CALLOC_STRUCT(gen_mipmap_state);
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if (!ctx)
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return NULL;
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ctx->pipe = pipe;
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/* we don't use blending, but need to set valid values */
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memset(&blend, 0, sizeof(blend));
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blend.rgb_src_factor = PIPE_BLENDFACTOR_ONE;
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blend.alpha_src_factor = PIPE_BLENDFACTOR_ONE;
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blend.rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
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blend.alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
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blend.colormask = PIPE_MASK_RGBA;
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ctx->blend = pipe->create_blend_state(pipe, &blend);
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/* depth/stencil/alpha */
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memset(&depthstencil, 0, sizeof(depthstencil));
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ctx->depthstencil = pipe->create_depth_stencil_alpha_state(pipe, &depthstencil);
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/* rasterizer */
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memset(&rasterizer, 0, sizeof(rasterizer));
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rasterizer.front_winding = PIPE_WINDING_CW;
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rasterizer.cull_mode = PIPE_WINDING_NONE;
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rasterizer.bypass_clipping = 1; /* bypasses viewport too */
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//rasterizer.bypass_vs = 1;
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ctx->rasterizer = pipe->create_rasterizer_state(pipe, &rasterizer);
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#if 0
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/* viewport */
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ctx->viewport.scale[0] = 1.0;
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ctx->viewport.scale[1] = 1.0;
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ctx->viewport.scale[2] = 1.0;
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ctx->viewport.scale[3] = 1.0;
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ctx->viewport.translate[0] = 0.0;
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ctx->viewport.translate[1] = 0.0;
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ctx->viewport.translate[2] = 0.0;
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ctx->viewport.translate[3] = 0.0;
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#endif
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make_vertex_shader(ctx);
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make_fragment_shader(ctx);
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return ctx;
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}
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/**
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* Destroy a mipmap generation context
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*/
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void
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util_destroy_gen_mipmap(struct gen_mipmap_state *ctx)
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{
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struct pipe_context *pipe = ctx->pipe;
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pipe->delete_blend_state(pipe, ctx->blend);
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pipe->delete_depth_stencil_alpha_state(pipe, ctx->depthstencil);
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pipe->delete_rasterizer_state(pipe, ctx->rasterizer);
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pipe->delete_vs_state(pipe, ctx->vs);
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pipe->delete_fs_state(pipe, ctx->fs);
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FREE(ctx);
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}
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#if 0
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static void
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simple_viewport(struct pipe_context *pipe, uint width, uint height)
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{
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struct pipe_viewport_state vp;
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vp.scale[0] = 0.5 * width;
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vp.scale[1] = -0.5 * height;
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vp.scale[2] = 1.0;
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vp.scale[3] = 1.0;
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vp.translate[0] = 0.5 * width;
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vp.translate[1] = 0.5 * height;
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vp.translate[2] = 0.0;
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vp.translate[3] = 0.0;
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pipe->set_viewport_state(pipe, &vp);
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}
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#endif
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/**
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* Generate mipmap images. It's assumed all needed texture memory is
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* already allocated.
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*
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* \param pt the texture to generate mipmap levels for
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* \param face which cube face to generate mipmaps for (0 for non-cube maps)
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* \param baseLevel the first mipmap level to use as a src
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* \param lastLevel the last mipmap level to generate
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*/
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void
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util_gen_mipmap(struct gen_mipmap_state *ctx,
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struct pipe_texture *pt,
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uint face, uint baseLevel, uint lastLevel)
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{
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struct pipe_context *pipe = ctx->pipe;
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struct pipe_screen *screen = pipe->screen;
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struct pipe_framebuffer_state fb;
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struct pipe_sampler_state sampler;
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void *sampler_cso;
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uint dstLevel;
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uint zslice = 0;
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/* check if we can render in the texture's format */
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if (!screen->is_format_supported(screen, pt->format, PIPE_SURFACE)) {
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#if 0
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fallback_gen_mipmap(ctx, pt, face, baseLevel, lastLevel);
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#endif
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return;
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}
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/* init framebuffer state */
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memset(&fb, 0, sizeof(fb));
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fb.num_cbufs = 1;
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/* sampler state */
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memset(&sampler, 0, sizeof(sampler));
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sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
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sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
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sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
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sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
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sampler.min_img_filter = PIPE_TEX_FILTER_LINEAR;
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sampler.mag_img_filter = PIPE_TEX_FILTER_LINEAR;
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sampler.normalized_coords = 1;
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/* bind our state */
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pipe->bind_blend_state(pipe, ctx->blend);
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pipe->bind_depth_stencil_alpha_state(pipe, ctx->depthstencil);
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pipe->bind_rasterizer_state(pipe, ctx->rasterizer);
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pipe->bind_vs_state(pipe, ctx->vs);
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pipe->bind_fs_state(pipe, ctx->fs);
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#if 0
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pipe->set_viewport_state(pipe, &ctx->viewport);
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#endif
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/*
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* XXX for small mipmap levels, it may be faster to use the software
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* fallback path...
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*/
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for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) {
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const uint srcLevel = dstLevel - 1;
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/*
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* Setup framebuffer / dest surface
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*/
|
||||
fb.cbufs[0] = screen->get_tex_surface(screen, pt, face, dstLevel, zslice);
|
||||
pipe->set_framebuffer_state(pipe, &fb);
|
||||
|
||||
/*
|
||||
* Setup sampler state
|
||||
* Note: we should only have to set the min/max LOD clamps to ensure
|
||||
* we grab texels from the right mipmap level. But some hardware
|
||||
* has trouble with min clamping so we also set the lod_bias to
|
||||
* try to work around that.
|
||||
*/
|
||||
sampler.min_lod = sampler.max_lod = srcLevel;
|
||||
sampler.lod_bias = srcLevel;
|
||||
sampler_cso = pipe->create_sampler_state(pipe, &sampler);
|
||||
pipe->bind_sampler_states(pipe, 1, &sampler_cso);
|
||||
|
||||
#if 0
|
||||
simple_viewport(pipe, pt->width[dstLevel], pt->height[dstLevel]);
|
||||
#endif
|
||||
|
||||
pipe->set_sampler_textures(pipe, 1, &pt);
|
||||
|
||||
/* quad coords in window coords (bypassing clipping, viewport mapping) */
|
||||
util_draw_texquad(pipe,
|
||||
0.0F, 0.0F, /* x0, y0 */
|
||||
(float) pt->width[dstLevel], /* x1 */
|
||||
(float) pt->height[dstLevel], /* y1 */
|
||||
0.0F); /* z */
|
||||
|
||||
|
||||
pipe->flush(pipe, PIPE_FLUSH_WAIT);
|
||||
|
||||
/*pipe->texture_update(pipe, pt); not really needed */
|
||||
|
||||
pipe->delete_sampler_state(pipe, sampler_cso);
|
||||
}
|
||||
|
||||
/* Note: caller must restore pipe/gallium state at this time */
|
||||
}
|
|
@ -0,0 +1,63 @@
|
|||
/**************************************************************************
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
**************************************************************************/
|
||||
|
||||
#ifndef U_GENMIPMAP_H
|
||||
#define U_GENMIPMAP_H
|
||||
|
||||
#include "pipe/p_state.h"
|
||||
|
||||
|
||||
struct gen_mipmap_state
|
||||
{
|
||||
struct pipe_context *pipe;
|
||||
|
||||
void *blend;
|
||||
void *depthstencil;
|
||||
void *rasterizer;
|
||||
/*struct pipe_viewport_state viewport;*/
|
||||
struct pipe_sampler_state *vs;
|
||||
struct pipe_sampler_state *fs;
|
||||
};
|
||||
|
||||
|
||||
|
||||
extern struct gen_mipmap_state *
|
||||
util_create_gen_mipmap(struct pipe_context *pipe);
|
||||
|
||||
|
||||
extern void
|
||||
util_destroy_gen_mipmap(struct gen_mipmap_state *ctx);
|
||||
|
||||
|
||||
|
||||
extern void
|
||||
util_gen_mipmap(struct gen_mipmap_state *ctx,
|
||||
struct pipe_texture *pt,
|
||||
uint face, uint baseLevel, uint lastLevel);
|
||||
|
||||
|
||||
#endif
|
Loading…
Reference in New Issue