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dolphin/Source/Core/VideoCommon/Src/TextureConversionShader.cpp
Ryan Houdek 6bdcde9dd6 [Android] Tegra 4 'support.' This brings up the OpenGL backend to support Tegra 4 to the point where it will run games but it doesn't have any video output for some reason. This is a large change that doesn't actually change much functionally. Walking through the changes. 
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.
2013-10-06 03:12:29 -05:00

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// Copyright 2013 Dolphin Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include <stdio.h>
#include <math.h>
#include <locale.h>
#ifdef __APPLE__
#include <xlocale.h>
#endif
#include "TextureConversionShader.h"
#include "TextureDecoder.h"
#include "PixelShaderManager.h"
#include "PixelShaderGen.h"
#include "BPMemory.h"
#include "RenderBase.h"
#include "VideoConfig.h"
#define WRITE p+=sprintf
static char text[16384];
static bool IntensityConstantAdded = false;
static int s_incrementSampleXCount = 0;
namespace TextureConversionShader
{
u16 GetEncodedSampleCount(u32 format)
{
switch (format)
{
case GX_TF_I4: return 8;
case GX_TF_I8: return 4;
case GX_TF_IA4: return 4;
case GX_TF_IA8: return 2;
case GX_TF_RGB565: return 2;
case GX_TF_RGB5A3: return 2;
case GX_TF_RGBA8: return 1;
case GX_CTF_R4: return 8;
case GX_CTF_RA4: return 4;
case GX_CTF_RA8: return 2;
case GX_CTF_A8: return 4;
case GX_CTF_R8: return 4;
case GX_CTF_G8: return 4;
case GX_CTF_B8: return 4;
case GX_CTF_RG8: return 2;
case GX_CTF_GB8: return 2;
case GX_TF_Z8: return 4;
case GX_TF_Z16: return 2;
case GX_TF_Z24X8: return 1;
case GX_CTF_Z4: return 8;
case GX_CTF_Z8M: return 4;
case GX_CTF_Z8L: return 4;
case GX_CTF_Z16L: return 2;
default: return 1;
}
}
const char* WriteRegister(API_TYPE ApiType, const char *prefix, const u32 num)
{
if (ApiType == API_OPENGL)
return ""; // Once we switch to GLSL 1.3 we can do something here
static char result[64];
sprintf(result, " : register(%s%d)", prefix, num);
return result;
}
// block dimensions : widthStride, heightStride
// texture dims : width, height, x offset, y offset
void WriteSwizzler(char*& p, u32 format, API_TYPE ApiType)
{
// [0] left, top, right, bottom of source rectangle within source texture
// [1] width and height of destination texture in pixels
// Two were merged for GLSL
WRITE(p, "uniform float4 " I_COLORS"[2] %s;\n", WriteRegister(ApiType, "c", C_COLORS));
float blkW = (float)TexDecoder_GetBlockWidthInTexels(format);
float blkH = (float)TexDecoder_GetBlockHeightInTexels(format);
float samples = (float)GetEncodedSampleCount(format);
if (ApiType == API_OPENGL)
{
WRITE(p, "#define samp0 samp9\n");
WRITE(p, "uniform sampler2DRect samp0;\n");
}
else if (ApiType & API_D3D9)
{
WRITE(p,"uniform sampler samp0 : register(s0);\n");
}
else
{
WRITE(p,"sampler samp0 : register(s0);\n");
WRITE(p, "Texture2D Tex0 : register(t0);\n");
}
if (ApiType == API_OPENGL)
{
WRITE(p, " out vec4 ocol0;\n");
WRITE(p, " VARYIN float2 uv0;\n");
WRITE(p, "void main()\n");
}
else
{
WRITE(p,"void main(\n");
if (ApiType != API_D3D11)
{
WRITE(p," out float4 ocol0 : COLOR0,\n");
}
else
{
WRITE(p," out float4 ocol0 : SV_Target,\n");
}
WRITE(p," in float2 uv0 : TEXCOORD0)\n");
}
WRITE(p, "{\n"
" float2 sampleUv;\n"
" float2 uv1 = floor(uv0);\n");
WRITE(p, " uv1.x = uv1.x * %f;\n", samples);
WRITE(p, " float xl = floor(uv1.x / %f);\n", blkW);
WRITE(p, " float xib = uv1.x - (xl * %f);\n", blkW);
WRITE(p, " float yl = floor(uv1.y / %f);\n", blkH);
WRITE(p, " float yb = yl * %f;\n", blkH);
WRITE(p, " float yoff = uv1.y - yb;\n");
WRITE(p, " float xp = uv1.x + (yoff * " I_COLORS"[1].x);\n");
WRITE(p, " float xel = floor(xp / %f);\n", blkW);
WRITE(p, " float xb = floor(xel / %f);\n", blkH);
WRITE(p, " float xoff = xel - (xb * %f);\n", blkH);
WRITE(p, " sampleUv.x = xib + (xb * %f);\n", blkW);
WRITE(p, " sampleUv.y = yb + xoff;\n");
WRITE(p, " sampleUv = sampleUv * " I_COLORS"[0].xy;\n");
if (ApiType == API_OPENGL)
WRITE(p," sampleUv.y = " I_COLORS"[1].y - sampleUv.y;\n");
WRITE(p, " sampleUv = sampleUv + " I_COLORS"[1].zw;\n");
if (ApiType != API_OPENGL)
{
WRITE(p, " sampleUv = sampleUv + float2(0.0,1.0);\n");// still to determine the reason for this
WRITE(p, " sampleUv = sampleUv / " I_COLORS"[0].zw;\n");
}
}
// block dimensions : widthStride, heightStride
// texture dims : width, height, x offset, y offset
void Write32BitSwizzler(char*& p, u32 format, API_TYPE ApiType)
{
// [0] left, top, right, bottom of source rectangle within source texture
// [1] width and height of destination texture in pixels
// Two were merged for GLSL
WRITE(p, "uniform float4 " I_COLORS"[2] %s;\n", WriteRegister(ApiType, "c", C_COLORS));
float blkW = (float)TexDecoder_GetBlockWidthInTexels(format);
float blkH = (float)TexDecoder_GetBlockHeightInTexels(format);
// 32 bit textures (RGBA8 and Z24) are store in 2 cache line increments
if (ApiType == API_OPENGL)
{
WRITE(p, "#define samp0 samp9\n");
WRITE(p, "uniform sampler2DRect samp0;\n");
}
else if (ApiType & API_D3D9)
{
WRITE(p,"uniform sampler samp0 : register(s0);\n");
}
else
{
WRITE(p,"sampler samp0 : register(s0);\n");
WRITE(p, "Texture2D Tex0 : register(t0);\n");
}
if (ApiType == API_OPENGL)
{
WRITE(p, " out float4 ocol0;\n");
WRITE(p, " VARYIN float2 uv0;\n");
WRITE(p, "void main()\n");
}
else
{
WRITE(p,"void main(\n");
if(ApiType != API_D3D11)
{
WRITE(p," out float4 ocol0 : COLOR0,\n");
}
else
{
WRITE(p," out float4 ocol0 : SV_Target,\n");
}
WRITE(p," in float2 uv0 : TEXCOORD0)\n");
}
WRITE(p, "{\n"
" float2 sampleUv;\n"
" float2 uv1 = floor(uv0);\n");
WRITE(p, " float yl = floor(uv1.y / %f);\n", blkH);
WRITE(p, " float yb = yl * %f;\n", blkH);
WRITE(p, " float yoff = uv1.y - yb;\n");
WRITE(p, " float xp = uv1.x + (yoff * " I_COLORS"[1].x);\n");
WRITE(p, " float xel = floor(xp / 2.0);\n");
WRITE(p, " float xb = floor(xel / %f);\n", blkH);
WRITE(p, " float xoff = xel - (xb * %f);\n", blkH);
WRITE(p, " float x2 = uv1.x * 2.0;\n");
WRITE(p, " float xl = floor(x2 / %f);\n", blkW);
WRITE(p, " float xib = x2 - (xl * %f);\n", blkW);
WRITE(p, " float halfxb = floor(xb / 2.0);\n");
WRITE(p, " sampleUv.x = xib + (halfxb * %f);\n", blkW);
WRITE(p, " sampleUv.y = yb + xoff;\n");
WRITE(p, " sampleUv = sampleUv * " I_COLORS"[0].xy;\n");
if (ApiType == API_OPENGL)
WRITE(p," sampleUv.y = " I_COLORS"[1].y - sampleUv.y;\n");
WRITE(p, " sampleUv = sampleUv + " I_COLORS"[1].zw;\n");
if (ApiType != API_OPENGL)
{
WRITE(p, " sampleUv = sampleUv + float2(0.0,1.0);\n");// still to determine the reason for this
WRITE(p, " sampleUv = sampleUv / " I_COLORS"[0].zw;\n");
}
}
void WriteSampleColor(char*& p, const char* colorComp, const char* dest, API_TYPE ApiType)
{
const char* texSampleOpName;
if (ApiType & API_D3D9)
texSampleOpName = "tex2D";
else if (ApiType == API_D3D11)
texSampleOpName = "tex0.Sample";
else
texSampleOpName = "texture2DRect";
// the increment of sampleUv.x is delayed, so we perform it here. see WriteIncrementSampleX.
const char* texSampleIncrementUnit;
if (ApiType != API_OPENGL)
texSampleIncrementUnit = I_COLORS"[0].x / " I_COLORS"[0].z";
else
texSampleIncrementUnit = I_COLORS"[0].x";
WRITE(p, " %s = %s(samp0, sampleUv + float2(%d.0 * (%s), 0.0)).%s;\n",
dest, texSampleOpName, s_incrementSampleXCount, texSampleIncrementUnit, colorComp);
}
void WriteColorToIntensity(char*& p, const char* src, const char* dest)
{
if (!IntensityConstantAdded)
{
WRITE(p, " float4 IntensityConst = float4(0.257f,0.504f,0.098f,0.0625f);\n");
IntensityConstantAdded = true;
}
WRITE(p, " %s = dot(IntensityConst.rgb, %s.rgb);\n", dest, src);
// don't add IntensityConst.a yet, because doing it later is faster and uses less instructions, due to vectorization
}
void WriteIncrementSampleX(char*& p,API_TYPE ApiType)
{
// the shader compiler apparently isn't smart or aggressive enough to recognize that:
// foo1 = lookup(x)
// x = x + increment;
// foo2 = lookup(x)
// x = x + increment;
// foo3 = lookup(x)
// can be replaced with this:
// foo1 = lookup(x + 0.0 * increment)
// foo2 = lookup(x + 1.0 * increment)
// foo3 = lookup(x + 2.0 * increment)
// which looks like the same operations but uses considerably fewer ALU instruction slots.
// thus, instead of using the former method, we only increment a counter internally here,
// and we wait until WriteSampleColor to write out the constant multiplier
// to achieve the increment as in the latter case.
s_incrementSampleXCount++;
}
void WriteToBitDepth(char*& p, u8 depth, const char* src, const char* dest)
{
float result = 255 / pow(2.0, (8 - depth));
WRITE(p, " %s = floor(%s * %ff);\n", dest, src, result);
}
void WriteEncoderEnd(char* p, API_TYPE ApiType)
{
WRITE(p, "}\n");
IntensityConstantAdded = false;
s_incrementSampleXCount = 0;
}
void WriteI8Encoder(char* p, API_TYPE ApiType)
{
WriteSwizzler(p, GX_TF_I8, ApiType);
WRITE(p, " float3 texSample;\n");
WriteSampleColor(p, "rgb", "texSample", ApiType);
WriteColorToIntensity(p, "texSample", "ocol0.b");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "rgb", "texSample", ApiType);
WriteColorToIntensity(p, "texSample", "ocol0.g");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "rgb", "texSample", ApiType);
WriteColorToIntensity(p, "texSample", "ocol0.r");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "rgb", "texSample", ApiType);
WriteColorToIntensity(p, "texSample", "ocol0.a");
WRITE(p, " ocol0.rgba += IntensityConst.aaaa;\n"); // see WriteColorToIntensity
WriteEncoderEnd(p, ApiType);
}
void WriteI4Encoder(char* p, API_TYPE ApiType)
{
WriteSwizzler(p, GX_TF_I4, ApiType);
WRITE(p, " float3 texSample;\n");
WRITE(p, " float4 color0;\n");
WRITE(p, " float4 color1;\n");
WriteSampleColor(p, "rgb", "texSample", ApiType);
WriteColorToIntensity(p, "texSample", "color0.b");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "rgb", "texSample", ApiType);
WriteColorToIntensity(p, "texSample", "color1.b");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "rgb", "texSample", ApiType);
WriteColorToIntensity(p, "texSample", "color0.g");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "rgb", "texSample", ApiType);
WriteColorToIntensity(p, "texSample", "color1.g");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "rgb", "texSample", ApiType);
WriteColorToIntensity(p, "texSample", "color0.r");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "rgb", "texSample", ApiType);
WriteColorToIntensity(p, "texSample", "color1.r");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "rgb", "texSample", ApiType);
WriteColorToIntensity(p, "texSample", "color0.a");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "rgb", "texSample", ApiType);
WriteColorToIntensity(p, "texSample", "color1.a");
WRITE(p, " color0.rgba += IntensityConst.aaaa;\n");
WRITE(p, " color1.rgba += IntensityConst.aaaa;\n");
WriteToBitDepth(p, 4, "color0", "color0");
WriteToBitDepth(p, 4, "color1", "color1");
WRITE(p, " ocol0 = (color0 * 16.0 + color1) / 255.0;\n");
WriteEncoderEnd(p, ApiType);
}
void WriteIA8Encoder(char* p,API_TYPE ApiType)
{
WriteSwizzler(p, GX_TF_IA8, ApiType);
WRITE(p, " float4 texSample;\n");
WriteSampleColor(p, "rgba", "texSample", ApiType);
WRITE(p, " ocol0.b = texSample.a;\n");
WriteColorToIntensity(p, "texSample", "ocol0.g");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "rgba", "texSample", ApiType);
WRITE(p, " ocol0.r = texSample.a;\n");
WriteColorToIntensity(p, "texSample", "ocol0.a");
WRITE(p, " ocol0.ga += IntensityConst.aa;\n");
WriteEncoderEnd(p, ApiType);
}
void WriteIA4Encoder(char* p,API_TYPE ApiType)
{
WriteSwizzler(p, GX_TF_IA4, ApiType);
WRITE(p, " float4 texSample;\n");
WRITE(p, " float4 color0;\n");
WRITE(p, " float4 color1;\n");
WriteSampleColor(p, "rgba", "texSample", ApiType);
WRITE(p, " color0.b = texSample.a;\n");
WriteColorToIntensity(p, "texSample", "color1.b");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "rgba", "texSample", ApiType);
WRITE(p, " color0.g = texSample.a;\n");
WriteColorToIntensity(p, "texSample", "color1.g");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "rgba", "texSample", ApiType);
WRITE(p, " color0.r = texSample.a;\n");
WriteColorToIntensity(p, "texSample", "color1.r");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "rgba", "texSample", ApiType);
WRITE(p, " color0.a = texSample.a;\n");
WriteColorToIntensity(p, "texSample", "color1.a");
WRITE(p, " color1.rgba += IntensityConst.aaaa;\n");
WriteToBitDepth(p, 4, "color0", "color0");
WriteToBitDepth(p, 4, "color1", "color1");
WRITE(p, " ocol0 = (color0 * 16.0 + color1) / 255.0;\n");
WriteEncoderEnd(p, ApiType);
}
void WriteRGB565Encoder(char* p,API_TYPE ApiType)
{
WriteSwizzler(p, GX_TF_RGB565, ApiType);
WriteSampleColor(p, "rgb", "float3 texSample0", ApiType);
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "rgb", "float3 texSample1", ApiType);
WRITE(p, " float2 texRs = float2(texSample0.r, texSample1.r);\n");
WRITE(p, " float2 texGs = float2(texSample0.g, texSample1.g);\n");
WRITE(p, " float2 texBs = float2(texSample0.b, texSample1.b);\n");
WriteToBitDepth(p, 6, "texGs", "float2 gInt");
WRITE(p, " float2 gUpper = floor(gInt / 8.0);\n");
WRITE(p, " float2 gLower = gInt - gUpper * 8.0;\n");
WriteToBitDepth(p, 5, "texRs", "ocol0.br");
WRITE(p, " ocol0.br = ocol0.br * 8.0 + gUpper;\n");
WriteToBitDepth(p, 5, "texBs", "ocol0.ga");
WRITE(p, " ocol0.ga = ocol0.ga + gLower * 32.0;\n");
WRITE(p, " ocol0 = ocol0 / 255.0;\n");
WriteEncoderEnd(p, ApiType);
}
void WriteRGB5A3Encoder(char* p,API_TYPE ApiType)
{
WriteSwizzler(p, GX_TF_RGB5A3, ApiType);
WRITE(p, " float4 texSample;\n");
WRITE(p, " float color0;\n");
WRITE(p, " float gUpper;\n");
WRITE(p, " float gLower;\n");
WriteSampleColor(p, "rgba", "texSample", ApiType);
// 0.8784 = 224 / 255 which is the maximum alpha value that can be represented in 3 bits
WRITE(p, "if(texSample.a > 0.878f) {\n");
WriteToBitDepth(p, 5, "texSample.g", "color0");
WRITE(p, " gUpper = floor(color0 / 8.0);\n");
WRITE(p, " gLower = color0 - gUpper * 8.0;\n");
WriteToBitDepth(p, 5, "texSample.r", "ocol0.b");
WRITE(p, " ocol0.b = ocol0.b * 4.0 + gUpper + 128.0;\n");
WriteToBitDepth(p, 5, "texSample.b", "ocol0.g");
WRITE(p, " ocol0.g = ocol0.g + gLower * 32.0;\n");
WRITE(p, "} else {\n");
WriteToBitDepth(p, 4, "texSample.r", "ocol0.b");
WriteToBitDepth(p, 4, "texSample.b", "ocol0.g");
WriteToBitDepth(p, 3, "texSample.a", "color0");
WRITE(p, "ocol0.b = ocol0.b + color0 * 16.0;\n");
WriteToBitDepth(p, 4, "texSample.g", "color0");
WRITE(p, "ocol0.g = ocol0.g + color0 * 16.0;\n");
WRITE(p, "}\n");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "rgba", "texSample", ApiType);
WRITE(p, "if(texSample.a > 0.878f) {\n");
WriteToBitDepth(p, 5, "texSample.g", "color0");
WRITE(p, " gUpper = floor(color0 / 8.0);\n");
WRITE(p, " gLower = color0 - gUpper * 8.0;\n");
WriteToBitDepth(p, 5, "texSample.r", "ocol0.r");
WRITE(p, " ocol0.r = ocol0.r * 4.0 + gUpper + 128.0;\n");
WriteToBitDepth(p, 5, "texSample.b", "ocol0.a");
WRITE(p, " ocol0.a = ocol0.a + gLower * 32.0;\n");
WRITE(p, "} else {\n");
WriteToBitDepth(p, 4, "texSample.r", "ocol0.r");
WriteToBitDepth(p, 4, "texSample.b", "ocol0.a");
WriteToBitDepth(p, 3, "texSample.a", "color0");
WRITE(p, "ocol0.r = ocol0.r + color0 * 16.0;\n");
WriteToBitDepth(p, 4, "texSample.g", "color0");
WRITE(p, "ocol0.a = ocol0.a + color0 * 16.0;\n");
WRITE(p, "}\n");
WRITE(p, " ocol0 = ocol0 / 255.0;\n");
WriteEncoderEnd(p, ApiType);
}
void WriteRGBA4443Encoder(char* p,API_TYPE ApiType)
{
WriteSwizzler(p, GX_TF_RGB5A3, ApiType);
WRITE(p, " float4 texSample;\n");
WRITE(p, " float4 color0;\n");
WRITE(p, " float4 color1;\n");
WriteSampleColor(p, "rgba", "texSample", ApiType);
WriteToBitDepth(p, 3, "texSample.a", "color0.b");
WriteToBitDepth(p, 4, "texSample.r", "color1.b");
WriteToBitDepth(p, 4, "texSample.g", "color0.g");
WriteToBitDepth(p, 4, "texSample.b", "color1.g");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "rgba", "texSample", ApiType);
WriteToBitDepth(p, 3, "texSample.a", "color0.r");
WriteToBitDepth(p, 4, "texSample.r", "color1.r");
WriteToBitDepth(p, 4, "texSample.g", "color0.a");
WriteToBitDepth(p, 4, "texSample.b", "color1.a");
WRITE(p, " ocol0 = (color0 * 16.0 + color1) / 255.0;\n");
WriteEncoderEnd(p, ApiType);
}
void WriteRGBA8Encoder(char* p,API_TYPE ApiType)
{
Write32BitSwizzler(p, GX_TF_RGBA8, ApiType);
WRITE(p, " float cl1 = xb - (halfxb * 2.0);\n");
WRITE(p, " float cl0 = 1.0 - cl1;\n");
WRITE(p, " float4 texSample;\n");
WRITE(p, " float4 color0;\n");
WRITE(p, " float4 color1;\n");
WriteSampleColor(p, "rgba", "texSample", ApiType);
WRITE(p, " color0.b = texSample.a;\n");
WRITE(p, " color0.g = texSample.r;\n");
WRITE(p, " color1.b = texSample.g;\n");
WRITE(p, " color1.g = texSample.b;\n");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "rgba", "texSample", ApiType);
WRITE(p, " color0.r = texSample.a;\n");
WRITE(p, " color0.a = texSample.r;\n");
WRITE(p, " color1.r = texSample.g;\n");
WRITE(p, " color1.a = texSample.b;\n");
WRITE(p, " ocol0 = (cl0 * color0) + (cl1 * color1);\n");
WriteEncoderEnd(p, ApiType);
}
void WriteC4Encoder(char* p, const char* comp,API_TYPE ApiType)
{
WriteSwizzler(p, GX_CTF_R4, ApiType);
WRITE(p, " float4 color0;\n");
WRITE(p, " float4 color1;\n");
WriteSampleColor(p, comp, "color0.b", ApiType);
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, comp, "color1.b", ApiType);
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, comp, "color0.g", ApiType);
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, comp, "color1.g", ApiType);
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, comp, "color0.r", ApiType);
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, comp, "color1.r", ApiType);
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, comp, "color0.a", ApiType);
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, comp, "color1.a", ApiType);
WriteToBitDepth(p, 4, "color0", "color0");
WriteToBitDepth(p, 4, "color1", "color1");
WRITE(p, " ocol0 = (color0 * 16.0 + color1) / 255.0;\n");
WriteEncoderEnd(p, ApiType);
}
void WriteC8Encoder(char* p, const char* comp,API_TYPE ApiType)
{
WriteSwizzler(p, GX_CTF_R8, ApiType);
WriteSampleColor(p, comp, "ocol0.b", ApiType);
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, comp, "ocol0.g", ApiType);
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, comp, "ocol0.r", ApiType);
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, comp, "ocol0.a", ApiType);
WriteEncoderEnd(p, ApiType);
}
void WriteCC4Encoder(char* p, const char* comp,API_TYPE ApiType)
{
WriteSwizzler(p, GX_CTF_RA4, ApiType);
WRITE(p, " float2 texSample;\n");
WRITE(p, " float4 color0;\n");
WRITE(p, " float4 color1;\n");
WriteSampleColor(p, comp, "texSample", ApiType);
WRITE(p, " color0.b = texSample.x;\n");
WRITE(p, " color1.b = texSample.y;\n");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, comp, "texSample", ApiType);
WRITE(p, " color0.g = texSample.x;\n");
WRITE(p, " color1.g = texSample.y;\n");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, comp, "texSample", ApiType);
WRITE(p, " color0.r = texSample.x;\n");
WRITE(p, " color1.r = texSample.y;\n");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, comp, "texSample", ApiType);
WRITE(p, " color0.a = texSample.x;\n");
WRITE(p, " color1.a = texSample.y;\n");
WriteToBitDepth(p, 4, "color0", "color0");
WriteToBitDepth(p, 4, "color1", "color1");
WRITE(p, " ocol0 = (color0 * 16.0 + color1) / 255.0;\n");
WriteEncoderEnd(p, ApiType);
}
void WriteCC8Encoder(char* p, const char* comp, API_TYPE ApiType)
{
WriteSwizzler(p, GX_CTF_RA8, ApiType);
WriteSampleColor(p, comp, "ocol0.bg", ApiType);
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, comp, "ocol0.ra", ApiType);
WriteEncoderEnd(p, ApiType);
}
void WriteZ8Encoder(char* p, const char* multiplier,API_TYPE ApiType)
{
WriteSwizzler(p, GX_CTF_Z8M, ApiType);
WRITE(p, " float depth;\n");
WriteSampleColor(p, "b", "depth", ApiType);
WRITE(p, "ocol0.b = frac(depth * %s);\n", multiplier);
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "b", "depth", ApiType);
WRITE(p, "ocol0.g = frac(depth * %s);\n", multiplier);
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "b", "depth", ApiType);
WRITE(p, "ocol0.r = frac(depth * %s);\n", multiplier);
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "b", "depth", ApiType);
WRITE(p, "ocol0.a = frac(depth * %s);\n", multiplier);
WriteEncoderEnd(p, ApiType);
}
void WriteZ16Encoder(char* p,API_TYPE ApiType)
{
WriteSwizzler(p, GX_TF_Z16, ApiType);
WRITE(p, " float depth;\n");
WRITE(p, " float3 expanded;\n");
// byte order is reversed
WriteSampleColor(p, "b", "depth", ApiType);
WRITE(p, " depth *= 16777215.0;\n");
WRITE(p, " expanded.r = floor(depth / (256.0 * 256.0));\n");
WRITE(p, " depth -= expanded.r * 256.0 * 256.0;\n");
WRITE(p, " expanded.g = floor(depth / 256.0);\n");
WRITE(p, " ocol0.b = expanded.g / 255.0;\n");
WRITE(p, " ocol0.g = expanded.r / 255.0;\n");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "b", "depth", ApiType);
WRITE(p, " depth *= 16777215.0;\n");
WRITE(p, " expanded.r = floor(depth / (256.0 * 256.0));\n");
WRITE(p, " depth -= expanded.r * 256.0 * 256.0;\n");
WRITE(p, " expanded.g = floor(depth / 256.0);\n");
WRITE(p, " ocol0.r = expanded.g / 255.0;\n");
WRITE(p, " ocol0.a = expanded.r / 255.0;\n");
WriteEncoderEnd(p, ApiType);
}
void WriteZ16LEncoder(char* p,API_TYPE ApiType)
{
WriteSwizzler(p, GX_CTF_Z16L, ApiType);
WRITE(p, " float depth;\n");
WRITE(p, " float3 expanded;\n");
// byte order is reversed
WriteSampleColor(p, "b", "depth", ApiType);
WRITE(p, " depth *= 16777215.0;\n");
WRITE(p, " expanded.r = floor(depth / (256.0 * 256.0));\n");
WRITE(p, " depth -= expanded.r * 256.0 * 256.0;\n");
WRITE(p, " expanded.g = floor(depth / 256.0);\n");
WRITE(p, " depth -= expanded.g * 256.0;\n");
WRITE(p, " expanded.b = depth;\n");
WRITE(p, " ocol0.b = expanded.b / 255.0;\n");
WRITE(p, " ocol0.g = expanded.g / 255.0;\n");
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "b", "depth", ApiType);
WRITE(p, " depth *= 16777215.0;\n");
WRITE(p, " expanded.r = floor(depth / (256.0 * 256.0));\n");
WRITE(p, " depth -= expanded.r * 256.0 * 256.0;\n");
WRITE(p, " expanded.g = floor(depth / 256.0);\n");
WRITE(p, " depth -= expanded.g * 256.0;\n");
WRITE(p, " expanded.b = depth;\n");
WRITE(p, " ocol0.r = expanded.b;\n");
WRITE(p, " ocol0.a = expanded.g;\n");
WriteEncoderEnd(p, ApiType);
}
void WriteZ24Encoder(char* p, API_TYPE ApiType)
{
Write32BitSwizzler(p, GX_TF_Z24X8, ApiType);
WRITE(p, " float cl = xb - (halfxb * 2.0);\n");
WRITE(p, " float depth0;\n");
WRITE(p, " float depth1;\n");
WRITE(p, " float3 expanded0;\n");
WRITE(p, " float3 expanded1;\n");
WriteSampleColor(p, "b", "depth0", ApiType);
WriteIncrementSampleX(p, ApiType);
WriteSampleColor(p, "b", "depth1", ApiType);
for (int i = 0; i < 2; i++)
{
WRITE(p, " depth%i *= 16777215.0;\n", i);
WRITE(p, " expanded%i.r = floor(depth%i / (256.0 * 256.0));\n", i, i);
WRITE(p, " depth%i -= expanded%i.r * 256.0 * 256.0;\n", i, i);
WRITE(p, " expanded%i.g = floor(depth%i / 256.0);\n", i, i);
WRITE(p, " depth%i -= expanded%i.g * 256.0;\n", i, i);
WRITE(p, " expanded%i.b = depth%i;\n", i, i);
}
WRITE(p, " if(cl > 0.5) {\n");
// upper 16
WRITE(p, " ocol0.b = expanded0.g / 255.0;\n");
WRITE(p, " ocol0.g = expanded0.b / 255.0;\n");
WRITE(p, " ocol0.r = expanded1.g / 255.0;\n");
WRITE(p, " ocol0.a = expanded1.b / 255.0;\n");
WRITE(p, " } else {\n");
// lower 8
WRITE(p, " ocol0.b = 1.0;\n");
WRITE(p, " ocol0.g = expanded0.r / 255.0;\n");
WRITE(p, " ocol0.r = 1.0;\n");
WRITE(p, " ocol0.a = expanded1.r / 255.0;\n");
WRITE(p, " }\n");
WriteEncoderEnd(p, ApiType);
}
const char *GenerateEncodingShader(u32 format,API_TYPE ApiType)
{
#ifndef ANDROID
locale_t locale = newlocale(LC_NUMERIC_MASK, "C", NULL); // New locale for compilation
locale_t old_locale = uselocale(locale); // Apply the locale for this thread
#endif
text[sizeof(text) - 1] = 0x7C; // canary
char *p = text;
switch (format)
{
case GX_TF_I4:
WriteI4Encoder(p, ApiType);
break;
case GX_TF_I8:
WriteI8Encoder(p, ApiType);
break;
case GX_TF_IA4:
WriteIA4Encoder(p, ApiType);
break;
case GX_TF_IA8:
WriteIA8Encoder(p, ApiType);
break;
case GX_TF_RGB565:
WriteRGB565Encoder(p, ApiType);
break;
case GX_TF_RGB5A3:
WriteRGB5A3Encoder(p, ApiType);
break;
case GX_TF_RGBA8:
WriteRGBA8Encoder(p, ApiType);
break;
case GX_CTF_R4:
WriteC4Encoder(p, "r", ApiType);
break;
case GX_CTF_RA4:
WriteCC4Encoder(p, "ar", ApiType);
break;
case GX_CTF_RA8:
WriteCC8Encoder(p, "ar", ApiType);
break;
case GX_CTF_A8:
WriteC8Encoder(p, "a", ApiType);
break;
case GX_CTF_R8:
WriteC8Encoder(p, "r", ApiType);
break;
case GX_CTF_G8:
WriteC8Encoder(p, "g", ApiType);
break;
case GX_CTF_B8:
WriteC8Encoder(p, "b", ApiType);
break;
case GX_CTF_RG8:
WriteCC8Encoder(p, "rg", ApiType);
break;
case GX_CTF_GB8:
WriteCC8Encoder(p, "gb", ApiType);
break;
case GX_TF_Z8:
WriteC8Encoder(p, "b", ApiType);
break;
case GX_TF_Z16:
WriteZ16Encoder(p, ApiType);
break;
case GX_TF_Z24X8:
WriteZ24Encoder(p, ApiType);
break;
case GX_CTF_Z4:
WriteC4Encoder(p, "b", ApiType);
break;
case GX_CTF_Z8M:
WriteZ8Encoder(p, "256.0", ApiType);
break;
case GX_CTF_Z8L:
WriteZ8Encoder(p, "65536.0" , ApiType);
break;
case GX_CTF_Z16L:
WriteZ16LEncoder(p, ApiType);
break;
default:
PanicAlert("Unknown texture copy format: 0x%x\n", format);
break;
}
if (text[sizeof(text) - 1] != 0x7C)
PanicAlert("TextureConversionShader generator - buffer too small, canary has been eaten!");
#ifndef ANDROID
uselocale(old_locale); // restore locale
freelocale(locale);
#endif
return text;
}
void SetShaderParameters(float width, float height, float offsetX, float offsetY, float widthStride, float heightStride,float buffW,float buffH)
{
g_renderer->SetPSConstant4f(C_COLORMATRIX, widthStride, heightStride, buffW, buffH);
g_renderer->SetPSConstant4f(C_COLORMATRIX + 1, width, (height - 1), offsetX, offsetY);
}
} // namespace
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