mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2024-09-22 04:11:46 +02:00
6bdcde9dd6
It changes the string in the Android backend select to just OpenGL ES. Adds a check in the Android code to check for Tegra 4 and to enable the option to select the OpenGL ES backend. Adds a DriverDetails bug under BUG_ISTEGRA as a blanket case of Tegra 4 support. The changes that effects most lines in this change. Removing all float suffixes in the pixel/vertex/util shaders since OpenGL ES 2 doesn't support float suffixes. Disables the shaders for reinterpreting the EFB format since Tegra 4 doesn't support integers. Changes GLFunctions.cpp to grab the correct Tegra extension functions. Readds the GLSL 1.2 'hacks' as GLSLES2 'hacks' since they are required for GLSL ES 2 Adds a GLSLES2 to the GLSL_VERSION enum. Disable the SamplerCache on Tegra since Tegra doesn't support samplers... Enable glBufferSubData on Tegra since it is the only mobile GPU to correctly work with it. Disable glDrawRangeElements on Tegra since it doesn't support it, This uses glDrawElements instead.
264 lines
8.9 KiB
C++
264 lines
8.9 KiB
C++
// Copyright 2013 Dolphin Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#ifndef _LIGHTINGSHADERGEN_H_
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#define _LIGHTINGSHADERGEN_H_
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#include "ShaderGenCommon.h"
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#include "NativeVertexFormat.h"
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#include "XFMemory.h"
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#define LIGHT_COL "%s[5*%d].%s"
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#define LIGHT_COL_PARAMS(lightsName, index, swizzle) (lightsName), (index), (swizzle)
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#define LIGHT_COSATT "%s[5*%d+1]"
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#define LIGHT_COSATT_PARAMS(lightsName, index) (lightsName), (index)
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#define LIGHT_DISTATT "%s[5*%d+2]"
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#define LIGHT_DISTATT_PARAMS(lightsName, index) (lightsName), (index)
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#define LIGHT_POS "%s[5*%d+3]"
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#define LIGHT_POS_PARAMS(lightsName, index) (lightsName), (index)
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#define LIGHT_DIR "%s[5*%d+4]"
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#define LIGHT_DIR_PARAMS(lightsName, index) (lightsName), (index)
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/**
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* Common uid data used for shader generators that use lighting calculations.
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*/
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struct LightingUidData
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{
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u32 matsource : 4; // 4x1 bit
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u32 enablelighting : 4; // 4x1 bit
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u32 ambsource : 4; // 4x1 bit
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u32 diffusefunc : 8; // 4x2 bits
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u32 attnfunc : 8; // 4x2 bits
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u32 light_mask : 32; // 4x8 bits
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};
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template<class T>
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static void GenerateLightShader(T& object, LightingUidData& uid_data, int index, int litchan_index, const char* lightsName, int coloralpha)
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{
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const LitChannel& chan = (litchan_index > 1) ? xfregs.alpha[litchan_index-2] : xfregs.color[litchan_index];
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const char* swizzle = "xyzw";
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if (coloralpha == 1)
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swizzle = "xyz";
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else if (coloralpha == 2)
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swizzle = "w";
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uid_data.attnfunc |= chan.attnfunc << (2*litchan_index);
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uid_data.diffusefunc |= chan.diffusefunc << (2*litchan_index);
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if (!(chan.attnfunc & 1))
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{
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// atten disabled
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switch (chan.diffusefunc)
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{
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case LIGHTDIF_NONE:
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object.Write("lacc.%s += " LIGHT_COL";\n", swizzle, LIGHT_COL_PARAMS(lightsName, index, swizzle));
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break;
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case LIGHTDIF_SIGN:
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case LIGHTDIF_CLAMP:
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object.Write("ldir = normalize(" LIGHT_POS".xyz - pos.xyz);\n", LIGHT_POS_PARAMS(lightsName, index));
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object.Write("lacc.%s += %sdot(ldir, _norm0)) * " LIGHT_COL";\n",
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swizzle, chan.diffusefunc != LIGHTDIF_SIGN ? "max(0.0," :"(", LIGHT_COL_PARAMS(lightsName, index, swizzle));
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break;
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default: _assert_(0);
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}
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}
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else // spec and spot
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{
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if (chan.attnfunc == 3)
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{ // spot
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object.Write("ldir = " LIGHT_POS".xyz - pos.xyz;\n", LIGHT_POS_PARAMS(lightsName, index));
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object.Write("dist2 = dot(ldir, ldir);\n"
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"dist = sqrt(dist2);\n"
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"ldir = ldir / dist;\n"
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"attn = max(0.0, dot(ldir, " LIGHT_DIR".xyz));\n",
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LIGHT_DIR_PARAMS(lightsName, index));
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// attn*attn may overflow
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object.Write("attn = max(0.0, " LIGHT_COSATT".x + " LIGHT_COSATT".y*attn + " LIGHT_COSATT".z*attn*attn) / dot(" LIGHT_DISTATT".xyz, float3(1.0,dist,dist2));\n",
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LIGHT_COSATT_PARAMS(lightsName, index), LIGHT_COSATT_PARAMS(lightsName, index), LIGHT_COSATT_PARAMS(lightsName, index), LIGHT_DISTATT_PARAMS(lightsName, index));
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}
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else if (chan.attnfunc == 1)
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{ // specular
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object.Write("ldir = normalize(" LIGHT_POS".xyz);\n", LIGHT_POS_PARAMS(lightsName, index));
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object.Write("attn = (dot(_norm0,ldir) >= 0.0) ? max(0.0, dot(_norm0, " LIGHT_DIR".xyz)) : 0.0;\n", LIGHT_DIR_PARAMS(lightsName, index));
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// attn*attn may overflow
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object.Write("attn = max(0.0, " LIGHT_COSATT".x + " LIGHT_COSATT".y*attn + " LIGHT_COSATT".z*attn*attn) / (" LIGHT_DISTATT".x + " LIGHT_DISTATT".y*attn + " LIGHT_DISTATT".z*attn*attn);\n",
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LIGHT_COSATT_PARAMS(lightsName, index), LIGHT_COSATT_PARAMS(lightsName, index), LIGHT_COSATT_PARAMS(lightsName, index),
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LIGHT_DISTATT_PARAMS(lightsName, index), LIGHT_DISTATT_PARAMS(lightsName, index), LIGHT_DISTATT_PARAMS(lightsName, index));
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}
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switch (chan.diffusefunc)
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{
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case LIGHTDIF_NONE:
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object.Write("lacc.%s += attn * " LIGHT_COL";\n", swizzle, LIGHT_COL_PARAMS(lightsName, index, swizzle));
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break;
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case LIGHTDIF_SIGN:
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case LIGHTDIF_CLAMP:
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object.Write("lacc.%s += attn * %sdot(ldir, _norm0)) * " LIGHT_COL";\n",
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swizzle,
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chan.diffusefunc != LIGHTDIF_SIGN ? "max(0.0," :"(",
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LIGHT_COL_PARAMS(lightsName, index, swizzle));
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break;
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default: _assert_(0);
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}
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}
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object.Write("\n");
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}
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// vertex shader
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// lights/colors
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// materials name is I_MATERIALS in vs and I_PMATERIALS in ps
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// inColorName is color in vs and colors_ in ps
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// dest is o.colors_ in vs and colors_ in ps
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template<class T>
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static void GenerateLightingShader(T& object, LightingUidData& uid_data, int components, const char* materialsName, const char* lightsName, const char* inColorName, const char* dest)
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{
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for (unsigned int j = 0; j < xfregs.numChan.numColorChans; j++)
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{
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const LitChannel& color = xfregs.color[j];
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const LitChannel& alpha = xfregs.alpha[j];
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object.Write("{\n");
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uid_data.matsource |= xfregs.color[j].matsource << j;
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if (color.matsource) // from vertex
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{
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if (components & (VB_HAS_COL0 << j))
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object.Write("mat = %s%d;\n", inColorName, j);
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else if (components & VB_HAS_COL0)
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object.Write("mat = %s0;\n", inColorName);
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else
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object.Write("mat = float4(1.0, 1.0, 1.0, 1.0);\n");
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}
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else // from color
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{
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object.Write("mat = %s[%d];\n", materialsName, j+2);
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}
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uid_data.enablelighting |= xfregs.color[j].enablelighting << j;
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if (color.enablelighting)
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{
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uid_data.ambsource |= xfregs.color[j].ambsource << j;
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if (color.ambsource) // from vertex
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{
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if (components & (VB_HAS_COL0<<j) )
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object.Write("lacc = %s%d;\n", inColorName, j);
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else if (components & VB_HAS_COL0 )
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object.Write("lacc = %s0;\n", inColorName);
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else
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// TODO: this isn't verified. Here we want to read the ambient from the vertex,
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// but the vertex itself has no color. So we don't know which value to read.
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// Returing 1.0 is the same as disabled lightning, so this could be fine
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object.Write("lacc = float4(1.0, 1.0, 1.0, 1.0);\n");
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}
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else // from color
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{
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object.Write("lacc = %s[%d];\n", materialsName, j);
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}
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}
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else
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{
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object.Write("lacc = float4(1.0, 1.0, 1.0, 1.0);\n");
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}
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// check if alpha is different
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uid_data.matsource |= xfregs.alpha[j].matsource << (j+2);
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if (alpha.matsource != color.matsource)
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{
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if (alpha.matsource) // from vertex
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{
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if (components & (VB_HAS_COL0<<j))
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object.Write("mat.w = %s%d.w;\n", inColorName, j);
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else if (components & VB_HAS_COL0)
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object.Write("mat.w = %s0.w;\n", inColorName);
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else object.Write("mat.w = 1.0;\n");
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}
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else // from color
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{
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object.Write("mat.w = %s[%d].w;\n", materialsName, j+2);
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}
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}
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uid_data.enablelighting |= xfregs.alpha[j].enablelighting << (j+2);
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if (alpha.enablelighting)
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{
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uid_data.ambsource |= xfregs.alpha[j].ambsource << (j+2);
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if (alpha.ambsource) // from vertex
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{
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if (components & (VB_HAS_COL0<<j) )
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object.Write("lacc.w = %s%d.w;\n", inColorName, j);
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else if (components & VB_HAS_COL0 )
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object.Write("lacc.w = %s0.w;\n", inColorName);
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else
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// TODO: The same for alpha: We want to read from vertex, but the vertex has no color
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object.Write("lacc.w = 1.0;\n");
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}
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else // from color
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{
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object.Write("lacc.w = %s[%d].w;\n", materialsName, j);
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}
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}
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else
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{
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object.Write("lacc.w = 1.0;\n");
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}
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if(color.enablelighting && alpha.enablelighting)
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{
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// both have lighting, test if they use the same lights
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int mask = 0;
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uid_data.attnfunc |= color.attnfunc << (2*j);
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uid_data.attnfunc |= alpha.attnfunc << (2*(j+2));
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uid_data.diffusefunc |= color.diffusefunc << (2*j);
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uid_data.diffusefunc |= alpha.diffusefunc << (2*(j+2));
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uid_data.light_mask |= color.GetFullLightMask() << (8*j);
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uid_data.light_mask |= alpha.GetFullLightMask() << (8*(j+2));
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if(color.lightparams == alpha.lightparams)
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{
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mask = color.GetFullLightMask() & alpha.GetFullLightMask();
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if(mask)
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{
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for (int i = 0; i < 8; ++i)
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{
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if (mask & (1<<i))
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{
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GenerateLightShader<T>(object, uid_data, i, j, lightsName, 3);
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}
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}
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}
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}
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// no shared lights
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for (int i = 0; i < 8; ++i)
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{
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if (!(mask&(1<<i)) && (color.GetFullLightMask() & (1<<i)))
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GenerateLightShader<T>(object, uid_data, i, j, lightsName, 1);
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if (!(mask&(1<<i)) && (alpha.GetFullLightMask() & (1<<i)))
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GenerateLightShader<T>(object, uid_data, i, j+2, lightsName, 2);
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}
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}
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else if (color.enablelighting || alpha.enablelighting)
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{
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// lights are disabled on one channel so process only the active ones
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const LitChannel& workingchannel = color.enablelighting ? color : alpha;
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const int lit_index = color.enablelighting ? j : (j+2);
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int coloralpha = color.enablelighting ? 1 : 2;
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uid_data.light_mask |= workingchannel.GetFullLightMask() << (8*lit_index);
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for (int i = 0; i < 8; ++i)
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{
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if (workingchannel.GetFullLightMask() & (1<<i))
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GenerateLightShader<T>(object, uid_data, i, lit_index, lightsName, coloralpha);
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}
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}
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object.Write("%s%d = mat * clamp(lacc, 0.0, 1.0);\n", dest, j);
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object.Write("}\n");
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}
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}
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#endif // _LIGHTINGSHADERGEN_H_
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