41f5abab31
Now builds on Playbook and Dev Alpha Make emulator more compatible with other OS (case sensitivity, defines, includes) Uses Android's code paths and backend
475 lines
13 KiB
C++
475 lines
13 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 "../../Core/MemMap.h"
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#include "../../Core/Host.h"
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#include "../../Core/System.h"
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#include "../Math3D.h"
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#include "../GPUState.h"
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#include "../ge_constants.h"
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#include "TextureCache.h"
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#include "TransformPipeline.h"
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#include "VertexDecoder.h"
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#include "ShaderManager.h"
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GLuint glprim[8] =
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{
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GL_POINTS,
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GL_LINES,
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GL_LINE_STRIP,
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GL_TRIANGLES,
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GL_TRIANGLE_STRIP,
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GL_TRIANGLE_FAN,
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GL_TRIANGLES, // With OpenGL ES we have to expand into triangles, tripling the data instead of doubling. sigh. OpenGL ES, Y U NO SUPPORT GL_QUADS?
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};
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DecodedVertex decoded[65536];
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TransformedVertex transformed[65536];
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uint16_t indexBuffer[65536]; // Unused
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void Light(float colorOut[4], const float colorIn[4], Vec3 pos, Vec3 normal, float dots[4])
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{
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// could cache a lot of stuff, such as ambient, across vertices...
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bool doShadeMapping = (gstate.texmapmode & 0x3) == 2;
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if (!doShadeMapping && !(gstate.lightEnable[0]&1) && !(gstate.lightEnable[1]&1) && !(gstate.lightEnable[2]&1) && !(gstate.lightEnable[3]&1))
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{
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memcpy(colorOut, colorIn, sizeof(float) * 4);
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return;
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}
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Color4 emissive;
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emissive.GetFromRGB(gstate.materialemissive);
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Color4 globalAmbient;
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globalAmbient.GetFromRGB(gstate.ambientcolor);
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globalAmbient.GetFromA(gstate.ambientalpha);
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Vec3 norm = normal.Normalized();
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Color4 in(colorIn);
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Color4 ambient;
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if (gstate.materialupdate & 1)
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{
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ambient = in;
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}
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else
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{
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ambient.GetFromRGB(gstate.materialambient);
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ambient.a=1.0f;
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}
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Color4 diffuse;
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if (gstate.materialupdate & 2)
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{
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diffuse = in;
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}
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else
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{
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diffuse.GetFromRGB(gstate.materialdiffuse);
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diffuse.a=1.0f;
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}
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Color4 specular;
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if (gstate.materialupdate & 4)
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{
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specular = in;
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}
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else
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{
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specular.GetFromRGB(gstate.materialspecular);
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specular.a=1.0f;
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}
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float specCoef = getFloat24(gstate.materialspecularcoef);
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norm.Normalize();
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Vec3 viewer(gstate.viewMatrix[8], gstate.viewMatrix[9], gstate.viewMatrix[10]);
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Color4 lightSum = globalAmbient * ambient + emissive;
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// Try lights.elf - there's something wrong with the lighting
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for (int l = 0; l < 4; l++)
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{
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// can we skip this light?
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if ((gstate.lightEnable[l] & 1) == 0) // && !doShadeMapping)
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continue;
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GELightComputation comp = (GELightComputation)(gstate.ltype[l]&3);
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GELightType type = (GELightType)((gstate.ltype[l]>>8)&3);
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Vec3 toLight;
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if (type == GE_LIGHTTYPE_DIRECTIONAL)
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toLight = Vec3(gstate.lightpos[l]);
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else
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toLight = Vec3(gstate.lightpos[l]) - pos;
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Vec3 dir = Vec3(gstate.lightdir[l]);
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bool doSpecular = (comp != GE_LIGHTCOMP_ONLYDIFFUSE);
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bool poweredDiffuse = comp == GE_LIGHTCOMP_BOTHWITHPOWDIFFUSE;
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float distance = toLight.Normalize();
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float lightScale = 1.0f;
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if (type != GE_LIGHTTYPE_DIRECTIONAL)
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{
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lightScale = 1.0f / (gstate.lightatt[l][0] + gstate.lightatt[l][1]*distance + gstate.lightatt[l][2]*distance*distance);
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if (lightScale>1.0f) lightScale=1.0f;
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}
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float dot = toLight * norm;
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// Clamp dot to zero.
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if (dot < 0.0f) dot = 0.0f;
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if (poweredDiffuse)
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dot = powf(dot, specCoef);
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Color4 diff = (gstate.lightColor[1][l] * diffuse) * (dot*lightScale);
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Color4 spec(0,0,0,0);
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if (doSpecular)
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{
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Vec3 halfVec = toLight;
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halfVec += viewer.Normalized();
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halfVec.Normalize();
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dot = halfVec * norm;
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if (dot >= 0)
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{
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spec += (gstate.lightColor[2][l] * specular * (powf(dot, specCoef)*lightScale));
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}
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}
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dots[l] = dot;
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if (gstate.lightEnable[l] & 1)
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{
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lightSum += gstate.lightColor[0][l]*ambient + diff + spec;
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}
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}
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for (int i = 0; i < 3; i++)
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colorOut[i] = lightSum[i];
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}
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void TransformAndDrawPrim(void *verts, void *inds, int prim, int vertexCount, LinkedShader *program, float *customUV, int forceIndexType)
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{
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// First, decode the verts and apply morphing
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VertexDecoder dec;
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dec.SetVertexType(gstate.vertType);
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dec.DecodeVerts(decoded, verts, inds, prim, vertexCount);
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bool useTexCoord = false;
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// Check if anything needs updating
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if (gstate.textureChanged)
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{
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if (gstate.textureMapEnable && !(gstate.clearmode & 1))
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{
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PSPSetTexture();
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useTexCoord = true;
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}
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}
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// Then, transform and draw in one big swoop (urgh!)
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// need to move this to the shader.
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// We're gonna have to keep software transforming RECTANGLES, unless we use a geom shader which we can't on OpenGL ES 2.0.
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// Usually, though, these primitives don't use lighting etc so it's no biggie performance wise, but it would be nice to get rid of
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// this code.
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// Actually, if we find the camera-relative right and down vectors, it might even be possible to add the extra points in pre-transformed
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// space and thus make decent use of hardware transform.
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// Actually again, single quads could be drawn more efficiently using GL_TRIANGLE_STRIP, no need to duplicate verts as for
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// GL_TRIANGLES. Still need to sw transform to compute the extra two corners though.
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// Temporary storage for RECTANGLES emulation
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float v2[3] = {0};
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float uv2[2] = {0};
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int numTrans = 0;
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TransformedVertex *trans = &transformed[0];
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// TODO: Could use glDrawElements in some cases, see below.
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// TODO: Split up into multiple draw calls for Android where you can't guarantee support for more than 0x10000 verts.
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int i = 0;
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#if defined(ANDROID) || defined(BLACKBERRY)
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if (vertexCount > 0x10000/3)
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vertexCount = 0x10000/3;
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#endif
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for (int i = 0; i < vertexCount; i++)
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{
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int indexType = (gstate.vertType & GE_VTYPE_IDX_MASK);
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if (forceIndexType != -1) {
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indexType = forceIndexType;
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}
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int index;
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if (indexType == GE_VTYPE_IDX_8BIT)
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{
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index = ((u8*)inds)[i];
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}
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else if (indexType == GE_VTYPE_IDX_16BIT)
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{
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index = ((u16*)inds)[i];
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}
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else
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{
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index = i;
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}
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float v[3] = {0,0,0};
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float c[4] = {1,1,1,1};
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float uv[2] = {0,0};
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if (gstate.vertType & GE_VTYPE_THROUGH_MASK)
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{
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// Do not touch the coordinates or the colors. No lighting.
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for (int j=0; j<3; j++)
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v[j] = decoded[index].pos[j];
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// TODO : check if has color
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for (int j=0; j<4; j++)
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c[j] = decoded[index].color[j];
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// TODO : check if has uv
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for (int j=0; j<2; j++)
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uv[j] = decoded[index].uv[j];
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//Rescale UV?
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}
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else
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{
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//We do software T&L for now
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float out[3], norm[3];
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if ((gstate.vertType & GE_VTYPE_WEIGHT_MASK) == GE_VTYPE_WEIGHT_NONE)
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{
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Vec3ByMatrix43(out, decoded[index].pos, gstate.worldMatrix);
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Norm3ByMatrix43(norm, decoded[index].normal, gstate.worldMatrix);
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}
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else
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{
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Vec3 psum(0,0,0);
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Vec3 nsum(0,0,0);
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int nweights = (gstate.vertType & GE_VTYPE_WEIGHT_MASK) >> GE_VTYPE_WEIGHT_SHIFT;
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for (int i = 0; i < nweights; i++)
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{
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Vec3ByMatrix43(out, decoded[index].pos, gstate.boneMatrix+i*12);
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Norm3ByMatrix43(norm, decoded[index].normal, gstate.boneMatrix+i*12);
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Vec3 tpos(out), tnorm(norm);
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psum += tpos*decoded[index].weights[i];
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nsum += tnorm*decoded[index].weights[i];
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}
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nsum.Normalize();
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psum.Write(out);
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nsum.Write(norm);
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}
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// Perform lighting here if enabled. don't need to check through, it's checked above.
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float dots[4] = {0,0,0,0};
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if (program->a_color0 != -1)
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{
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//c[1] = norm[1];
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float litColor[4] = {0,0,0,0};
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Light(litColor, decoded[index].color, out, norm, dots);
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if (gstate.lightingEnable & 1)
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{
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memcpy(c, litColor, sizeof(litColor));
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}
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else
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{
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// no lighting? copy the color.
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for (int j=0; j<4; j++)
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c[j] = decoded[index].color[j];
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}
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}
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else
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{
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// no color in the fragment program???
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for (int j=0; j<4; j++)
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c[j] = decoded[index].color[j];
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}
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if (customUV) {
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uv[0] = customUV[index * 2 + 0]*gstate.uScale + gstate.uOff;
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uv[1] = customUV[index * 2 + 1]*gstate.vScale + gstate.vOff;
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} else {
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// Perform texture coordinate generation after the transform and lighting - one style of UV depends on lights.
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switch (gstate.texmapmode & 0x3)
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{
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case 0: // UV mapping
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// Texture scale/offset is only performed in this mode.
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uv[0] = decoded[index].uv[0]*gstate.uScale + gstate.uOff;
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uv[1] = decoded[index].uv[1]*gstate.vScale + gstate.vOff;
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break;
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case 1:
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{
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// Projection mapping
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Vec3 source;
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switch ((gstate.texmapmode >> 8) & 0x3)
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{
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case 0: // Use model space XYZ as source
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source = decoded[index].pos;
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break;
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case 1: // Use unscaled UV as source
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source = Vec3(decoded[index].uv[0], decoded[index].uv[1], 0.0f);
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break;
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case 2: // Use normalized normal as source
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source = Vec3(norm).Normalized();
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break;
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case 3: // Use non-normalized normal as source!
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source = Vec3(norm);
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break;
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}
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float uvw[3];
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Vec3ByMatrix43(uvw, &source.x, gstate.tgenMatrix);
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uv[0] = uvw[0];
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uv[1] = uvw[1];
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}
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break;
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case 2:
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// Shade mapping
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{
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int lightsource1 = gstate.texshade & 0x3;
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int lightsource2 = (gstate.texshade >> 8) & 0x3;
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uv[0] = dots[lightsource1];
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uv[1] = dots[lightsource2];
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}
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break;
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case 3:
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// Illegal
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break;
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}
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}
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// Transform the coord by the view matrix. Should this be done before or after texcoord generation?
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Vec3ByMatrix43(v, out, gstate.viewMatrix);
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}
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// We need to tesselate axis-aligned rectangles, as they're only specified by two coordinates.
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if (prim == GE_PRIM_RECTANGLES)
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{
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if ((i & 1) == 0)
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{
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// Save this vertex so we can generate when we get the next one. Color is taken from the last vertex.
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memcpy(v2, v, sizeof(float)*3);
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memcpy(uv2,uv,sizeof(float)*2);
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}
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else
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{
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// We have to turn the rectangle into two triangles, so 6 points. Sigh.
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// top left
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trans->x = v[0]; trans->y = v[1];
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trans->z = v[2];
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trans->uv[0] = uv[0]; trans->uv[1] = uv[1];
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memcpy(trans->color, c, 4*sizeof(float));
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trans++;
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// top right
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trans->x = v2[0]; trans->y = v[1];
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trans->z = v[2];
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trans->uv[0] = uv2[0]; trans->uv[1] = uv[1];
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memcpy(trans->color, c, 4*sizeof(float));
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trans++;
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// bottom right
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trans->x = v2[0]; trans->y = v2[1];
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trans->z = v[2];
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trans->uv[0] = uv2[0]; trans->uv[1] = uv2[1];
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memcpy(trans->color, c, 4*sizeof(float));
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trans++;
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// bottom left
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trans->x = v[0]; trans->y = v2[1];
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trans->z = v[2];
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trans->uv[0] = uv[0]; trans->uv[1] = uv2[1];
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memcpy(trans->color, c, 4*sizeof(float));
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trans++;
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// top left
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trans->x = v[0]; trans->y = v[1];
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trans->z = v[2];
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trans->uv[0] = uv[0]; trans->uv[1] = uv[1];
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memcpy(trans->color, c, 4*sizeof(float));
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trans++;
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// bottom right
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trans->x = v2[0]; trans->y = v2[1];
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trans->z = v[2];
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trans->uv[0] = uv2[0]; trans->uv[1] = uv2[1];
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memcpy(trans->color, c, 4*sizeof(float));
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trans++;
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numTrans += 6;
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}
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}
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else
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{
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memcpy(&trans->x, v, 3*sizeof(float));
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memcpy(trans->color, c, 4*sizeof(float));
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memcpy(trans->uv, uv, 2*sizeof(float));
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trans++;
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numTrans++;
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}
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}
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glEnableVertexAttribArray(program->a_position);
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if (useTexCoord && program->a_texcoord != -1) glEnableVertexAttribArray(program->a_texcoord);
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if (program->a_color0 != -1) glEnableVertexAttribArray(program->a_color0);
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const int vertexSize = sizeof(*trans);
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glVertexAttribPointer(program->a_position, 3, GL_FLOAT, GL_FALSE, vertexSize, transformed);
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if (useTexCoord && program->a_texcoord != -1) glVertexAttribPointer(program->a_texcoord, 2, GL_FLOAT, GL_FALSE, vertexSize, ((uint8_t*)transformed) + 3 * 4);
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if (program->a_color0 != -1) glVertexAttribPointer(program->a_color0, 4, GL_FLOAT, GL_FALSE, vertexSize, ((uint8_t*)transformed) + 5 * 4);
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// NOTICE_LOG(G3D,"DrawPrimitive: %i", numTrans);
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glDrawArrays(glprim[prim], 0, numTrans);
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glDisableVertexAttribArray(program->a_position);
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if (useTexCoord && program->a_texcoord != -1) glDisableVertexAttribArray(program->a_texcoord);
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if (program->a_color0 != -1) glDisableVertexAttribArray(program->a_color0);
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/*
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if (((gstate.vertType ) & GE_VTYPE_IDX_MASK) == GE_VTYPE_IDX_8BIT)
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{
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glDrawElements(glprim, vertexCount, GL_UNSIGNED_BYTE, inds);
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}
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else if (((gstate.vertType ) & GE_VTYPE_IDX_MASK) == GE_VTYPE_IDX_16BIT)
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{
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glDrawElements(glprim, vertexCount, GL_UNSIGNED_SHORT, inds);
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}
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else
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{*/
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}
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