mirror of
https://github.com/hrydgard/ppsspp.git
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56175bc505
Avoid unnecessary state changes and reduces the amount of OpenGL calls. It also puts all the interesting logic at the same place, reducing the complexity a little.
129 lines
3.5 KiB
C++
129 lines
3.5 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#if defined(ANDROID) || defined(BLACKBERRY)
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#include <GLES2/gl2.h>
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#include <GLES2/gl2ext.h>
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#else
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#include <GL/glew.h>
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#if defined(__APPLE__)
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#include <OpenGL/gl.h>
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#else
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#include <GL/gl.h>
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#endif
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#endif
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#include "ge_constants.h"
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#include "GPUState.h"
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#include "GLES/ShaderManager.h"
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#include "GLES/DisplayListInterpreter.h"
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#include "Null/NullGpu.h"
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#include "../Core/CoreParameter.h"
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#include "../Core/System.h"
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GPUgstate gstate;
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GPUStateCache gstate_c;
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GPUInterface *gpu;
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GPUStatistics gpuStats;
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void InitGfxState()
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{
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memset(&gstate, 0, sizeof(gstate));
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for (int i = 0; i < 256; i++) {
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gstate.cmdmem[i] = i << 24;
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}
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gstate.lightingEnable = 0x17000001;
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static const float identity4x3[12] =
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{1,0,0,
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0,1,0,
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0,0,1,
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0,0,0,};
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static const float identity4x4[16] =
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{1,0,0,0,
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0,1,0,0,
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0,0,1,0,
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0,0,0,1};
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memcpy(gstate.worldMatrix, identity4x3, 12 * sizeof(float));
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memcpy(gstate.viewMatrix, identity4x3, 12 * sizeof(float));
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memcpy(gstate.projMatrix, identity4x4, 16 * sizeof(float));
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memcpy(gstate.tgenMatrix, identity4x3, 12 * sizeof(float));
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for (int i = 0; i < 8; i++) {
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memcpy(gstate.boneMatrix + i * 12, identity4x3, 12 * sizeof(float));
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}
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switch (PSP_CoreParameter().gpuCore) {
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case GPU_NULL:
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gpu = new NullGPU();
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break;
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case GPU_GLES:
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gpu = new GLES_GPU(PSP_CoreParameter().renderWidth, PSP_CoreParameter().renderHeight);
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break;
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}
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}
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void ShutdownGfxState()
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{
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delete gpu;
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gpu = NULL;
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}
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// When you have changed state outside the psp gfx core,
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// or saved the context and has reloaded it, call this function.
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void ReapplyGfxState()
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{
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if (!gpu)
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return;
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// ShaderManager_DirtyShader();
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// The commands are embedded in the command memory so we can just reexecute the words. Convenient.
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// To be safe we pass 0xFFFFFFF as the diff.
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/*
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gpu->ExecuteOp(gstate.cmdmem[GE_CMD_ALPHABLENDENABLE], 0xFFFFFFFF);
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gpu->ExecuteOp(gstate.cmdmem[GE_CMD_ALPHATESTENABLE], 0xFFFFFFFF);
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gpu->ExecuteOp(gstate.cmdmem[GE_CMD_BLENDMODE], 0xFFFFFFFF);
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gpu->ExecuteOp(gstate.cmdmem[GE_CMD_ZTEST], 0xFFFFFFFF);
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gpu->ExecuteOp(gstate.cmdmem[GE_CMD_ZTESTENABLE], 0xFFFFFFFF);
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gpu->ExecuteOp(gstate.cmdmem[GE_CMD_CULL], 0xFFFFFFFF);
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gpu->ExecuteOp(gstate.cmdmem[GE_CMD_CULLFACEENABLE], 0xFFFFFFFF);
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gpu->ExecuteOp(gstate.cmdmem[GE_CMD_SCISSOR1], 0xFFFFFFFF);
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gpu->ExecuteOp(gstate.cmdmem[GE_CMD_SCISSOR2], 0xFFFFFFFF);
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*/
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for (int i = GE_CMD_VERTEXTYPE; i < GE_CMD_BONEMATRIXNUMBER; i++)
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{
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gpu->ExecuteOp(gstate.cmdmem[i], 0xFFFFFFFF);
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}
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// Can't write to bonematrixnumber here
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for (int i = GE_CMD_MORPHWEIGHT0; i < GE_CMD_PATCHFACING; i++)
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{
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gpu->ExecuteOp(gstate.cmdmem[i], 0xFFFFFFFF);
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}
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// There are a few here in the middle that we shouldn't execute...
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for (int i = GE_CMD_VIEWPORTX1; i < GE_CMD_TRANSFERSTART; i++)
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{
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gpu->ExecuteOp(gstate.cmdmem[i], 0xFFFFFFFF);
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}
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// TODO: there's more...
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}
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