void WriteI4Encoder(char* p)
{
WriteSwizzler(p, GX_TF_I4);
WRITE(p, " float3 texSample;\n");
WRITE(p, " float4 color0;\n");
WRITE(p, " float4 color1;\n");
WriteSampleColor(p, "rgb", "texSample", 0);
WriteColorToIntensity(p, "texSample", "color0.b");
WriteSampleColor(p, "rgb", "texSample", 1);
WriteColorToIntensity(p, "texSample", "color1.b");
WriteSampleColor(p, "rgb", "texSample", 2);
WriteColorToIntensity(p, "texSample", "color0.g");
WriteSampleColor(p, "rgb", "texSample", 3);
WriteColorToIntensity(p, "texSample", "color1.g");
WriteSampleColor(p, "rgb", "texSample", 4);
WriteColorToIntensity(p, "texSample", "color0.r");
WriteSampleColor(p, "rgb", "texSample", 5);
WriteColorToIntensity(p, "texSample", "color1.r");
WriteSampleColor(p, "rgb", "texSample", 6);
WriteColorToIntensity(p, "texSample", "color0.a");
WriteSampleColor(p, "rgb", "texSample", 7);
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 * 16.0f + color1) / 255.0f;\n");
WriteEncoderEnd(p);
}
static 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", 0, ApiType);
WriteColorToIntensity(p, "texSample", "color0.b");
WriteSampleColor(p, "rgb", "texSample", 1, ApiType);
WriteColorToIntensity(p, "texSample", "color1.b");
WriteSampleColor(p, "rgb", "texSample", 2, ApiType);
WriteColorToIntensity(p, "texSample", "color0.g");
WriteSampleColor(p, "rgb", "texSample", 3, ApiType);
WriteColorToIntensity(p, "texSample", "color1.g");
WriteSampleColor(p, "rgb", "texSample", 4, ApiType);
WriteColorToIntensity(p, "texSample", "color0.r");
WriteSampleColor(p, "rgb", "texSample", 5, ApiType);
WriteColorToIntensity(p, "texSample", "color1.r");
WriteSampleColor(p, "rgb", "texSample", 6, ApiType);
WriteColorToIntensity(p, "texSample", "color0.a");
WriteSampleColor(p, "rgb", "texSample", 7, 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);
}
static void WriteI4Encoder(char*& p, APIType ApiType, const EFBCopyParams& params)
{
WriteSwizzler(p, params, EFBCopyFormat::R4, ApiType);
WRITE(p, " float3 texSample;\n");
WRITE(p, " float4 color0;\n");
WRITE(p, " float4 color1;\n");
WriteSampleColor(p, "rgb", "texSample", 0, ApiType, params);
WriteColorToIntensity(p, "texSample", "color0.b");
WriteSampleColor(p, "rgb", "texSample", 1, ApiType, params);
WriteColorToIntensity(p, "texSample", "color1.b");
WriteSampleColor(p, "rgb", "texSample", 2, ApiType, params);
WriteColorToIntensity(p, "texSample", "color0.g");
WriteSampleColor(p, "rgb", "texSample", 3, ApiType, params);
WriteColorToIntensity(p, "texSample", "color1.g");
WriteSampleColor(p, "rgb", "texSample", 4, ApiType, params);
WriteColorToIntensity(p, "texSample", "color0.r");
WriteSampleColor(p, "rgb", "texSample", 5, ApiType, params);
WriteColorToIntensity(p, "texSample", "color1.r");
WriteSampleColor(p, "rgb", "texSample", 6, ApiType, params);
WriteColorToIntensity(p, "texSample", "color0.a");
WriteSampleColor(p, "rgb", "texSample", 7, ApiType, params);
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);
}
static void WriteZ24Encoder(char*& p, APIType ApiType, const EFBCopyParams& params)
{
WriteSwizzler(p, EFBCopyFormat::RGBA8, ApiType);
WRITE(p, " float depth0;\n");
WRITE(p, " float depth1;\n");
WRITE(p, " float3 expanded0;\n");
WRITE(p, " float3 expanded1;\n");
WriteSampleColor(p, "r", "depth0", 0, ApiType, params);
WriteSampleColor(p, "r", "depth1", 1, ApiType, params);
for (int i = 0; i < 2; i++)
{
WRITE(p, " depth%i *= 16777216.0;\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 (!first) {\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);
}
static void WriteZ24Encoder(char*& p, API_TYPE ApiType)
{
WriteSwizzler(p, GX_TF_Z24X8, ApiType);
WRITE(p, " float depth0;\n");
WRITE(p, " float depth1;\n");
WRITE(p, " float3 expanded0;\n");
WRITE(p, " float3 expanded1;\n");
WriteSampleColor(p, "b", "depth0", 0, ApiType);
WriteSampleColor(p, "b", "depth1", 1, 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 (!first) {\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);
}
static void WriteRGB565Encoder(char*& p,API_TYPE ApiType)
{
WriteSwizzler(p, GX_TF_RGB565, ApiType);
WriteSampleColor(p, "rgb", "float3 texSample0", 0, ApiType);
WriteSampleColor(p, "rgb", "float3 texSample1", 1, 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 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", 0, 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");
WriteSampleColor(p, "rgba", "texSample", 1, 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 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);
}
static 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, "r", "depth", 0, ApiType);
if (ApiType == API_D3D) WRITE(p, "depth = 1.0f - depth;\n");
WRITE(p, " depth *= 16777216.0;\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");
WriteSampleColor(p, "r", "depth", 1, ApiType);
if (ApiType == API_D3D) WRITE(p, "depth = 1.0f - depth;\n");
WRITE(p, " depth *= 16777216.0;\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 / 255.0;\n");
WRITE(p, " ocol0.a = expanded.g / 255.0;\n");
WriteEncoderEnd(p);
}
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 *= 16777215.0f;\n");
WRITE(p, " expanded.r = floor(depth / (256 * 256));\n");
WRITE(p, " depth -= expanded.r * 256 * 256;\n");
WRITE(p, " expanded.g = floor(depth / 256);\n");
WRITE(p, " depth -= expanded.g * 256;\n");
WRITE(p, " expanded.b = depth;\n");
WRITE(p, " ocol0.b = expanded.b / 255;\n");
WRITE(p, " ocol0.g = expanded.g / 255;\n");
WriteIncrementSampleX(p,ApiType);
WriteSampleColor(p, "b", "depth",ApiType);
WRITE(p, " depth *= 16777215.0f;\n");
WRITE(p, " expanded.r = floor(depth / (256 * 256));\n");
WRITE(p, " depth -= expanded.r * 256 * 256;\n");
WRITE(p, " expanded.g = floor(depth / 256);\n");
WRITE(p, " depth -= expanded.g * 256;\n");
WRITE(p, " expanded.b = depth;\n");
WRITE(p, " ocol0.r = expanded.b;\n");
WRITE(p, " ocol0.a = expanded.g;\n");
WriteEncoderEnd(p);
}
static void WriteRGBA8Encoder(char*& p,API_TYPE ApiType)
{
WriteSwizzler(p, GX_TF_RGBA8, ApiType);
WRITE(p, " float4 texSample;\n");
WRITE(p, " float4 color0;\n");
WRITE(p, " float4 color1;\n");
WriteSampleColor(p, "rgba", "texSample", 0, 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");
WriteSampleColor(p, "rgba", "texSample", 1, 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 = first ? color0 : color1;\n");
WriteEncoderEnd(p, ApiType);
}
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);
}
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 = {texSample0.r, texSample1.r};\n");
WRITE(p, " float2 texGs = {texSample0.g, texSample1.g};\n");
WRITE(p, " float2 texBs = {texSample0.b, texSample1.b};\n");
WriteToBitDepth(p, 6, "texGs", "float2 gInt");
WRITE(p, " float2 gUpper = floor(gInt / 8.0f);\n");
WRITE(p, " float2 gLower = gInt - gUpper * 8.0f;\n");
WriteToBitDepth(p, 5, "texRs", "ocol0.br");
WRITE(p, " ocol0.br = ocol0.br * 8.0f + gUpper;\n");
WriteToBitDepth(p, 5, "texBs", "ocol0.ga");
WRITE(p, " ocol0.ga = ocol0.ga + gLower * 32.0f;\n");
WRITE(p, " ocol0 = ocol0 / 255.0f;\n");
WriteEncoderEnd(p);
}
static void WriteRGB565Encoder(char*& p, APIType ApiType, const EFBCopyParams& params)
{
WriteSwizzler(p, params, EFBCopyFormat::RGB565, ApiType);
WRITE(p, " float3 texSample0;\n");
WRITE(p, " float3 texSample1;\n");
WriteSampleColor(p, "rgb", "texSample0", 0, ApiType, params);
WriteSampleColor(p, "rgb", "texSample1", 1, ApiType, params);
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);
}
static void WriteZ8Encoder(char*& p, const char* multiplier,API_TYPE ApiType)
{
WriteSwizzler(p, GX_CTF_Z8M, ApiType);
WRITE(p, " float depth;\n");
WriteSampleColor(p, "r", "depth", 0, ApiType);
if (ApiType == API_D3D) WRITE(p, "depth = 1.0f - depth;\n");
WRITE(p, "ocol0.b = frac(depth * %s);\n", multiplier);
WriteSampleColor(p, "r", "depth", 1, ApiType);
if (ApiType == API_D3D) WRITE(p, "depth = 1.0f - depth;\n");
WRITE(p, "ocol0.g = frac(depth * %s);\n", multiplier);
WriteSampleColor(p, "r", "depth", 2, ApiType);
if (ApiType == API_D3D) WRITE(p, "depth = 1.0f - depth;\n");
WRITE(p, "ocol0.r = frac(depth * %s);\n", multiplier);
WriteSampleColor(p, "r", "depth", 3, ApiType);
if (ApiType == API_D3D) WRITE(p, "depth = 1.0f - depth;\n");
WRITE(p, "ocol0.a = frac(depth * %s);\n", multiplier);
WriteEncoderEnd(p);
}
static void WriteXFBEncoder(char*& p, APIType ApiType, const EFBCopyParams& params)
{
WriteSwizzler(p, params, EFBCopyFormat::XFB, ApiType);
WRITE(p, "float3 color0, color1;\n");
WriteSampleColor(p, "rgb", "color0", 0, ApiType, params);
WriteSampleColor(p, "rgb", "color1", 1, ApiType, params);
// Gamma is only applied to XFB copies.
WRITE(p, " color0 = pow(color0, float3(gamma_rcp, gamma_rcp, gamma_rcp));\n");
WRITE(p, " color1 = pow(color1, float3(gamma_rcp, gamma_rcp, gamma_rcp));\n");
// Convert to YUV.
WRITE(p, " const float3 y_const = float3(0.257, 0.504, 0.098);\n");
WRITE(p, " const float3 u_const = float3(-0.148, -0.291, 0.439);\n");
WRITE(p, " const float3 v_const = float3(0.439, -0.368, -0.071);\n");
WRITE(p, " float3 average = (color0 + color1) * 0.5;\n");
WRITE(p, " ocol0.b = dot(color0, y_const) + 0.0625;\n");
WRITE(p, " ocol0.g = dot(average, u_const) + 0.5;\n");
WRITE(p, " ocol0.r = dot(color1, y_const) + 0.0625;\n");
WRITE(p, " ocol0.a = dot(average, v_const) + 0.5;\n");
WriteEncoderEnd(p);
}
void WriteZ8Encoder(char* p, const char* multiplier)
{
WriteSwizzler(p, GX_CTF_Z8M);
WRITE(p, " float depth;\n");
WriteSampleColor(p, "b", "depth", 0);
WRITE(p, " depth = 1.0f - depth;\n");
WRITE(p, "ocol0.b = frac(depth * %s);\n", multiplier);
WriteSampleColor(p, "b", "depth", 1);
WRITE(p, " depth = 1.0f - depth;\n");
WRITE(p, "ocol0.g = frac(depth * %s);\n", multiplier);
WriteSampleColor(p, "b", "depth", 2);
WRITE(p, " depth = 1.0f - depth;\n");
WRITE(p, "ocol0.r = frac(depth * %s);\n", multiplier);
WriteSampleColor(p, "b", "depth", 3);
WRITE(p, " depth = 1.0f - depth;\n");
WRITE(p, "ocol0.a = frac(depth * %s);\n", multiplier);
WriteEncoderEnd(p);
}
static void WriteRGBA8Encoder(char*& p, APIType ApiType, const EFBCopyParams& params)
{
WriteSwizzler(p, EFBCopyFormat::RGBA8, ApiType);
WRITE(p, " float4 texSample;\n");
WRITE(p, " float4 color0;\n");
WRITE(p, " float4 color1;\n");
WriteSampleColor(p, "rgba", "texSample", 0, ApiType, params);
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");
WriteSampleColor(p, "rgba", "texSample", 1, ApiType, params);
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 = first ? color0 : color1;\n");
WriteEncoderEnd(p);
}
static 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", 0, 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");
WriteSampleColor(p, "rgba", "texSample", 1, 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);
}
