Emulator-Archive/ppsspp
1
0
Fork 0
mirror of https://github.com/hrydgard/ppsspp.git synced 2024-11-23 05:19:56 +00:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity

Vendor Based Alpha and Color Testing

Browse Source
This commit is contained in:
raven02 2013-07-21 01:14:36 +08:00
parent 8d30ebf3b0
commit 7ac496529b
5 changed files with 46 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
GPU/GLES/FragmentShaderGenerator.cpp
View File

@ -28,6 +28,7 @@
#endif
#include "FragmentShaderGenerator.h"
#include "Framebuffer.h"
#include "../ge_constants.h"
#include "../GPUState.h"
#include <cstdio>
@ -202,10 +203,16 @@ void GenerateFragmentShader(char *buffer) {
}
if (enableAlphaTest) {
WRITE(p, "float roundTo255th(in float x) { float y = x + (0.49/255.0); return y - fract(y * 255.0) * (1.0 / 255.0); }\n");
if (gstate_c.gpuVendor == GPU_VENDOR_POWERVR)
WRITE(p, "float roundTo255th(in float x) { float y = x + (0.5/255.0); return y - fract(y * 255.0) * (1.0 / 255.0); }\n");
else
WRITE(p, "float roundAndScaleTo255f(in float x) { return floor(x * 255.0 + 0.5); }\n");
}
if (enableColorTest) {
WRITE(p, "vec3 roundTo255thv(in vec3 x) { vec3 y = x + (0.5/255.0); return y - fract(y * 255.0) * (1.0 / 255.0); }\n");
if (gstate_c.gpuVendor == GPU_VENDOR_POWERVR)
WRITE(p, "vec3 roundTo255thv(in vec3 x) { vec3 y = x + (0.5/255.0); return y - fract(y * 255.0) * (1.0 / 255.0); }\n");
else
WRITE(p, "vec3 roundAndScaleTo255v(in vec3 x) { return floor(x * 255.0 + 0.5); }\n");
}
WRITE(p, "void main() {\n");
@ -272,7 +279,10 @@ void GenerateFragmentShader(char *buffer) {
int alphaTestFunc = gstate.alphatest & 7;
const char *alphaTestFuncs[] = { "#", "#", " != ", " == ", " >= ", " > ", " <= ", " < " }; // never/always don't make sense
if (alphaTestFuncs[alphaTestFunc][0] != '#') {
WRITE(p, " if (roundTo255th(v.a) %s u_alphacolorref.a) discard;\n", alphaTestFuncs[alphaTestFunc]);
if (gstate_c.gpuVendor == GPU_VENDOR_POWERVR)
WRITE(p, " if (roundTo255th(v.a) %s u_alphacolorref.a) discard;\n", alphaTestFuncs[alphaTestFunc]);
else
WRITE(p, " if (roundAndScaleTo255f(v.a) %s u_alphacolorref.a) discard;\n", alphaTestFuncs[alphaTestFunc]);
}
}
@ -290,7 +300,10 @@ void GenerateFragmentShader(char *buffer) {
const char *colorTestFuncs[] = { "#", "#", " != ", " == " }; // never/always don't make sense
int colorTestMask = gstate.colormask;
if (colorTestFuncs[colorTestFunc][0] != '#') {
WRITE(p, "if (roundTo255thv(v.rgb) %s u_alphacolorref.rgb) discard;\n", colorTestFuncs[colorTestFunc]);
if (gstate_c.gpuVendor == GPU_VENDOR_POWERVR)
WRITE(p, "if (roundTo255thv(v.rgb) %s u_alphacolorref.rgb) discard;\n", colorTestFuncs[colorTestFunc]);
else
WRITE(p, "if (roundAndScaleTo255v(v.rgb) %s u_alphacolorref.rgb) discard;\n", colorTestFuncs[colorTestFunc]);
}
}

13
GPU/GLES/Framebuffer.cpp
View File

@ -191,14 +191,17 @@ FramebufferManager::FramebufferManager() :
|| vendor == "Intel Corporation"
|| vendor == "Tungsten Graphics, Inc") { // We'll assume this last one means Intel
gpuVendor = GPU_VENDOR_INTEL;
} else if(vendor == "ARM") {
} else if(vendor == "ARM")
gpuVendor = GPU_VENDOR_ARM;
} else {
else if(vendor == "Imagination Technologies")
gpuVendor = GPU_VENDOR_POWERVR;
else if(vendor == "Qualcomm")
gpuVendor = GPU_VENDOR_ADRENO;
else
gpuVendor = GPU_VENDOR_UNKNOWN;
}
} else {
} else
gpuVendor = GPU_VENDOR_UNKNOWN;
}
gstate_c.gpuVendor = gpuVendor;
}
FramebufferManager::~FramebufferManager() {

2
GPU/GLES/Framebuffer.h
View File

@ -49,6 +49,8 @@ enum {
GPU_VENDOR_AMD = 2,
GPU_VENDOR_INTEL = 3,
GPU_VENDOR_ARM = 4,
GPU_VENDOR_POWERVR = 5,
GPU_VENDOR_ADRENO = 6,
GPU_VENDOR_UNKNOWN = 0
};

25
GPU/GLES/ShaderManager.cpp
View File

@ -34,6 +34,7 @@
#include "GPU/GLES/ShaderManager.h"
#include "GPU/GLES/TransformPipeline.h"
#include "UI/OnScreenDisplay.h"
#include "Framebuffer.h"
Shader::Shader(const char *code, uint32_t shaderType, bool useHWTransform) : failed_(false), useHWTransform_(useHWTransform) {
source_ = code;
@ -195,13 +196,23 @@ static void SetColorUniform3Alpha(int uniform, u32 color, u8 alpha) {
// This passes colors unscaled (e.g. 0 - 255 not 0 - 1.)
static void SetColorUniform3Alpha255(int uniform, u32 color, u8 alpha) {
const float col[4] = {
(float)((color & 0xFF)) * (1.0f / 255.0f),
(float)((color & 0xFF00) >> 8) * (1.0f / 255.0f),
(float)((color & 0xFF0000) >> 16) * (1.0f / 255.0f),
(float)alpha * (1.0f / 255.0f)
};
glUniform4fv(uniform, 1, col);
if (gstate_c.gpuVendor == GPU_VENDOR_POWERVR) {
const float col[4] = {
(float)((color & 0xFF)) * (1.0f / 255.0f),
(float)((color & 0xFF00) >> 8) * (1.0f / 255.0f),
(float)((color & 0xFF0000) >> 16) * (1.0f / 255.0f),
(float)alpha * (1.0f / 255.0f)
};
glUniform4fv(uniform, 1, col);
} else {
const float col[4] = {
(float)((color & 0xFF)) ,
(float)((color & 0xFF00) >> 8) ,
(float)((color & 0xFF0000) >> 16) ,
(float)alpha
};
glUniform4fv(uniform, 1, col);
}
}
static void SetColorUniform3ExtraFloat(int uniform, u32 color, float extra) {

1
GPU/GPUState.h
View File

@ -285,6 +285,7 @@ struct GPUStateCache
u32 curRTHeight;
u32 getRelativeAddress(u32 data) const;
int gpuVendor;
};
// TODO: Implement support for these.