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vertex shader for texture converter

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This commit is contained in:
degasus
2013-01-11 11:59:42 +01:00
parent 092a99cbd2
commit 60b8e4fb1c
6 changed files with 99 additions and 87 deletions
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116
Source/Plugins/Plugin_VideoOGL/Src/TextureConverter.cpp
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@ -53,6 +53,7 @@ const int renderBufferHeight = 1024;
static FRAGMENTSHADER s_rgbToYuyvProgram;
static FRAGMENTSHADER s_yuyvToRgbProgram;
static VERTEXSHADER s_vProgram;
// Not all slots are taken - but who cares.
const u32 NUM_ENCODING_PROGRAMS = 64;
@ -66,52 +67,63 @@ static TargetRectangle s_cached_sourceRc;
static int s_cached_srcWidth = 0;
static int s_cached_srcHeight = 0;
void CreateRgbToYuyvProgram()
void CreatePrograms()
{
// Output is BGRA because that is slightly faster than RGBA.
const char *FProgram =
"#version 130\n"
"#extension GL_ARB_texture_rectangle : enable\n"
"uniform sampler2DRect samp0;\n"
"void main()\n"
"{\n"
" vec2 uv1 = vec2(gl_TexCoord[0].x + 1.0f, gl_TexCoord[0].y);\n"
" vec3 c0 = texture2DRect(samp0, gl_TexCoord[0].xy).rgb;\n"
" vec3 c1 = texture2DRect(samp0, uv1).rgb;\n"
" vec3 y_const = vec3(0.257f,0.504f,0.098f);\n"
" vec3 u_const = vec3(-0.148f,-0.291f,0.439f);\n"
" vec3 v_const = vec3(0.439f,-0.368f,-0.071f);\n"
" vec4 const3 = vec4(0.0625f,0.5f,0.0625f,0.5f);\n"
" vec3 c01 = (c0 + c1) * 0.5f;\n"
" gl_FragData[0] = vec4(dot(c1,y_const),dot(c01,u_const),dot(c0,y_const),dot(c01, v_const)) + const3;\n"
"}\n";
if (!PixelShaderCache::CompilePixelShader(s_rgbToYuyvProgram, FProgram))
ERROR_LOG(VIDEO, "Failed to create RGB to YUYV fragment program.");
}
void CreateYuyvToRgbProgram()
{
const char *FProgram =
const char *FProgramRgbToYuyv =
"#version 130\n"
"#extension GL_ARB_texture_rectangle : enable\n"
"uniform sampler2DRect samp0;\n"
"in vec2 uv0;\n"
"out vec4 ocol0;\n"
"void main()\n"
"{\n"
" vec4 c0 = texture2DRect(samp0, gl_TexCoord[0].xy).rgba;\n"
" float f = step(0.5, fract(gl_TexCoord[0].x));\n"
" float y = mix(c0.b, c0.r, f);\n"
" float yComp = 1.164f * (y - 0.0625f);\n"
" float uComp = c0.g - 0.5f;\n"
" float vComp = c0.a - 0.5f;\n"
" gl_FragData[0] = vec4(yComp + (1.596f * vComp),\n"
" yComp - (0.813f * vComp) - (0.391f * uComp),\n"
" yComp + (2.018f * uComp),\n"
" 1.0f);\n"
" vec3 c0 = texture2DRect(samp0, uv0).rgb;\n"
" vec3 c1 = texture2DRect(samp0, uv0 + vec2(1.0, 0.0)).rgb;\n"
" vec3 c01 = (c0 + c1) * 0.5;\n"
" vec3 y_const = vec3(0.257,0.504,0.098);\n"
" vec3 u_const = vec3(-0.148,-0.291,0.439);\n"
" vec3 v_const = vec3(0.439,-0.368,-0.071);\n"
" vec4 const3 = vec4(0.0625,0.5,0.0625f,0.5);\n"
" ocol0 = vec4(dot(c1,y_const),dot(c01,u_const),dot(c0,y_const),dot(c01, v_const)) + const3;\n"
"}\n";
if (!PixelShaderCache::CompilePixelShader(s_yuyvToRgbProgram, FProgram))
if (!PixelShaderCache::CompilePixelShader(s_rgbToYuyvProgram, FProgramRgbToYuyv))
ERROR_LOG(VIDEO, "Failed to create RGB to YUYV fragment program.");
const char *FProgramYuyvToRgb =
"#version 130\n"
"#extension GL_ARB_texture_rectangle : enable\n"
"uniform sampler2DRect samp0;\n"
"in vec2 uv0;\n"
"out vec4 ocol0;\n"
"void main()\n"
"{\n"
" vec4 c0 = texture2DRect(samp0, uv0).rgba;\n"
" float f = step(0.5, fract(uv0.x));\n"
" float y = mix(c0.b, c0.r, f);\n"
" float yComp = 1.164f * (y - 0.0625f);\n"
" float uComp = c0.g - 0.5f;\n"
" float vComp = c0.a - 0.5f;\n"
" ocol0 = vec4(yComp + (1.596f * vComp),\n"
" yComp - (0.813f * vComp) - (0.391f * uComp),\n"
" yComp + (2.018f * uComp),\n"
" 1.0f);\n"
"}\n";
if (!PixelShaderCache::CompilePixelShader(s_yuyvToRgbProgram, FProgramYuyvToRgb))
ERROR_LOG(VIDEO, "Failed to create YUYV to RGB fragment program.");
const char *VProgram =
"#version 130\n"
"in vec2 vposition;\n"
"in vec2 texture0;\n"
"out vec2 uv0;\n"
"void main()\n"
"{\n"
" uv0 = texture0;\n"
" gl_Position = vec4(vposition,0,1);\n"
"}\n";
if (!VertexShaderCache::CompileVertexShader(s_vProgram, VProgram))
ERROR_LOG(VIDEO, "Failed to create texture converter vertex program.");
}
FRAGMENTSHADER &GetOrCreateEncodingShader(u32 format)
@ -152,11 +164,10 @@ void Init()
glGenVertexArrays(1, &s_encode_VAO );
glBindBuffer(GL_ARRAY_BUFFER, s_encode_VBO );
glBindVertexArray( s_encode_VAO );
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(2, GL_FLOAT, 4*sizeof(GLfloat), NULL);
glClientActiveTexture(GL_TEXTURE0);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(2, GL_FLOAT, 4*sizeof(GLfloat), (GLfloat*)NULL + 2);
glEnableVertexAttribArray(SHADER_POSITION_ATTRIB);
glVertexAttribPointer(SHADER_POSITION_ATTRIB, 2, GL_FLOAT, 0, sizeof(GLfloat)*4, (GLfloat*)NULL);
glEnableVertexAttribArray(SHADER_TEXTURE0_ATTRIB);
glVertexAttribPointer(SHADER_TEXTURE0_ATTRIB, 2, GL_FLOAT, 0, sizeof(GLfloat)*4, (GLfloat*)NULL+2);
s_cached_sourceRc.top = -1;
s_cached_sourceRc.bottom = -1;
s_cached_sourceRc.left = -1;
@ -168,11 +179,10 @@ void Init()
glBindVertexArray( s_decode_VAO );
s_cached_srcWidth = -1;
s_cached_srcHeight = -1;
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(2, GL_FLOAT, sizeof(GLfloat)*4, NULL);
glClientActiveTexture(GL_TEXTURE0);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(2, GL_FLOAT, sizeof(GLfloat)*4, (GLfloat*)NULL+2);
glEnableVertexAttribArray(SHADER_POSITION_ATTRIB);
glVertexAttribPointer(SHADER_POSITION_ATTRIB, 2, GL_FLOAT, 0, sizeof(GLfloat)*4, (GLfloat*)NULL);
glEnableVertexAttribArray(SHADER_TEXTURE0_ATTRIB);
glVertexAttribPointer(SHADER_TEXTURE0_ATTRIB, 2, GL_FLOAT, 0, sizeof(GLfloat)*4, (GLfloat*)NULL+2);
// TODO: this after merging with graphic_update
glBindVertexArray(0);
@ -191,9 +201,8 @@ void Init()
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);
CreateRgbToYuyvProgram();
CreateYuyvToRgbProgram();
CreatePrograms();
}
void Shutdown()
@ -208,6 +217,7 @@ void Shutdown()
s_rgbToYuyvProgram.Destroy();
s_yuyvToRgbProgram.Destroy();
s_vProgram.Destroy();
for (unsigned int i = 0; i < NUM_ENCODING_PROGRAMS; i++)
s_encodingPrograms[i].Destroy();
@ -348,7 +358,7 @@ int EncodeToRamFromTexture(u32 address,GLuint source_texture, bool bFromZBuffer,
s32 expandedWidth = (width + blkW) & (~blkW);
s32 expandedHeight = (height + blkH) & (~blkH);
ProgramShaderCache::SetBothShaders(texconv_shader.glprogid, 0);
ProgramShaderCache::SetBothShaders(texconv_shader.glprogid, s_vProgram.glprogid);
float sampleStride = bScaleByHalf ? 2.f : 1.f;
TextureConversionShader::SetShaderParameters((float)expandedWidth,
@ -380,7 +390,7 @@ void EncodeToRamYUYV(GLuint srcTexture, const TargetRectangle& sourceRc, u8* des
{
g_renderer->ResetAPIState();
ProgramShaderCache::SetBothShaders(s_rgbToYuyvProgram.glprogid, 0);
ProgramShaderCache::SetBothShaders(s_rgbToYuyvProgram.glprogid, s_vProgram.glprogid);
EncodeToRamUsingShader(srcTexture, sourceRc, destAddr, dstWidth / 2, dstHeight, 0, false, false);
FramebufferManager::SetFramebuffer(0);
@ -439,7 +449,7 @@ void DecodeToTexture(u32 xfbAddr, int srcWidth, int srcHeight, GLuint destTextur
}
glViewport(0, 0, srcWidth, srcHeight);
ProgramShaderCache::SetBothShaders(s_yuyvToRgbProgram.glprogid, 0);
ProgramShaderCache::SetBothShaders(s_yuyvToRgbProgram.glprogid, s_vProgram.glprogid);
GL_REPORT_ERRORD();