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openglosd.cpp
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#define __STL_CONFIG_H
#include <algorithm>
#include "openglosd.h"
/****************************************************************************************
* Helpers
****************************************************************************************/
void ConvertColor(const GLint &colARGB, glm::vec4 &col) {
col.a = ((colARGB & 0xFF000000) >> 24) / 255.0;
col.r = ((colARGB & 0x00FF0000) >> 16) / 255.0;
col.g = ((colARGB & 0x0000FF00) >> 8 ) / 255.0;
col.b = ((colARGB & 0x000000FF) ) / 255.0;
}
/****************************************************************************************
* cShader
****************************************************************************************/
const char *rectVertexShader =
"#version 330 core \n\
\
layout (location = 0) in vec2 position; \
out vec4 rectCol; \
uniform vec4 inColor; \
uniform mat4 projection; \
\
void main() \
{ \
gl_Position = projection * vec4(position.x, position.y, 0.0, 1.0); \
rectCol = inColor; \
} \
";
const char *rectFragmentShader =
"#version 330 core \n\
\
in vec4 rectCol; \
out vec4 color; \
\
void main() \
{ \
color = rectCol; \
} \
";
const char *textureVertexShader =
"#version 330 core \n\
\
layout (location = 0) in vec2 position; \
layout (location = 1) in vec2 texCoords; \
\
out vec2 TexCoords; \
out vec4 alphaValue;\
\
uniform mat4 projection; \
uniform vec4 alpha; \
\
void main() \
{ \
gl_Position = projection * vec4(position.x, position.y, 0.0, 1.0); \
TexCoords = texCoords; \
alphaValue = alpha; \
} \
";
const char *textureFragmentShader =
"#version 330 core \n\
in vec2 TexCoords; \
in vec4 alphaValue; \
out vec4 color; \
\
uniform sampler2D screenTexture; \
\
void main() \
{ \
color = texture(screenTexture, TexCoords) * alphaValue; \
} \
";
const char *textVertexShader =
"#version 330 core \n\
\
layout (location = 0) in vec2 position; \
layout (location = 1) in vec2 texCoords; \
\
out vec2 TexCoords; \
out vec4 textColor; \
\
uniform mat4 projection; \
uniform vec4 inColor; \
\
void main() \
{ \
gl_Position = projection * vec4(position.x, position.y, 0.0, 1.0); \
TexCoords = texCoords; \
textColor = inColor; \
} \
";
const char *textFragmentShader =
"#version 330 core \n\
in vec2 TexCoords; \
in vec4 textColor; \
\
out vec4 color; \
\
uniform sampler2D glyphTexture; \
\
void main() \
{ \
vec4 sampled = vec4(1.0, 1.0, 1.0, texture(glyphTexture, TexCoords).r); \
color = textColor * sampled; \
} \
";
static cShader *Shaders[stCount];
void cShader::Use(void) {
glUseProgram(id);
}
bool cShader::Load(eShaderType type) {
this->type = type;
const char *vertexCode = NULL;
const char *fragmentCode = NULL;
switch (type) {
case stRect:
vertexCode = rectVertexShader;
fragmentCode = rectFragmentShader;
break;
case stTexture:
vertexCode = textureVertexShader;
fragmentCode = textureFragmentShader;
break;
case stText:
vertexCode = textVertexShader;
fragmentCode = textFragmentShader;
break;
default:
esyslog("[softhddev]unknown shader type\n");
break;
}
if (vertexCode == NULL || fragmentCode == NULL) {
esyslog("[softhddev]ERROR reading shader\n");
return false;
}
if (!Compile(vertexCode, fragmentCode)) {
esyslog("[softhddev]ERROR compiling shader\n");
return false;
}
return true;
}
void cShader::SetFloat(const GLchar *name, GLfloat value) {
glUniform1f(glGetUniformLocation(id, name), value);
}
void cShader::SetInteger(const GLchar *name, GLint value) {
glUniform1i(glGetUniformLocation(id, name), value);
}
void cShader::SetVector2f(const GLchar *name, GLfloat x, GLfloat y) {
glUniform2f(glGetUniformLocation(id, name), x, y);
}
void cShader::SetVector3f(const GLchar *name, GLfloat x, GLfloat y, GLfloat z) {
glUniform3f(glGetUniformLocation(id, name), x, y, z);
}
void cShader::SetVector4f(const GLchar *name, GLfloat x, GLfloat y, GLfloat z, GLfloat w) {
glUniform4f(glGetUniformLocation(id, name), x, y, z, w);
}
void cShader::SetMatrix4(const GLchar *name, const glm::mat4 &matrix) {
glUniformMatrix4fv(glGetUniformLocation(id, name), 1, GL_FALSE, glm::value_ptr(matrix));
}
bool cShader::Compile(const char *vertexCode, const char *fragmentCode) {
GLuint sVertex, sFragment;
// Vertex Shader
sVertex = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(sVertex, 1, &vertexCode, NULL);
glCompileShader(sVertex);
if (!CheckCompileErrors(sVertex))
return false;
// Fragment Shader
sFragment = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(sFragment, 1, &fragmentCode, NULL);
glCompileShader(sFragment);
if (!CheckCompileErrors(sFragment))
return false;
// link Program
id = glCreateProgram();
glAttachShader(id, sVertex);
glAttachShader(id, sFragment);
glLinkProgram(id);
if (!CheckCompileErrors(id, true))
return false;
// Delete the shaders as they're linked into our program now and no longer necessery
glDeleteShader(sVertex);
glDeleteShader(sFragment);
return true;
}
bool cShader::CheckCompileErrors(GLuint object, bool program) {
GLint success;
GLchar infoLog[1024];
if (!program) {
glGetShaderiv(object, GL_COMPILE_STATUS, &success);
if (!success) {
glGetShaderInfoLog(object, 1024, NULL, infoLog);
esyslog("[softhddev]:SHADER: Compile-time error: Type: %d - %s", type, infoLog);
return false;
}
} else {
glGetProgramiv(object, GL_LINK_STATUS, &success);
if (!success) {
glGetProgramInfoLog(object, 1024, NULL, infoLog);
esyslog("[softhddev]:SHADER: Link-time error: Type: %d", type);
return false;
}
}
return true;
}
#define KERNING_UNKNOWN (-10000)
/****************************************************************************************
* cOglGlyph
****************************************************************************************/
cOglGlyph::cOglGlyph(uint charCode, FT_BitmapGlyph ftGlyph) {
this->charCode = charCode;
bearingLeft = ftGlyph->left;
bearingTop = ftGlyph->top;
width = ftGlyph->bitmap.width;
height = ftGlyph->bitmap.rows;
advanceX = ftGlyph->root.advance.x >> 16; //value in 1/2^16 pixel
LoadTexture(ftGlyph);
}
cOglGlyph::~cOglGlyph(void) {
}
int cOglGlyph::GetKerningCache(uint prevSym) {
for (int i = kerningCache.Size(); --i > 0; ) {
if (kerningCache[i].prevSym == prevSym)
return kerningCache[i].kerning;
}
return KERNING_UNKNOWN;
}
void cOglGlyph::SetKerningCache(uint prevSym, int kerning) {
kerningCache.Append(tKerning(prevSym, kerning));
}
void cOglGlyph::BindTexture(void) {
glBindTexture(GL_TEXTURE_2D, texture);
}
void cOglGlyph::LoadTexture(FT_BitmapGlyph ftGlyph) {
// Disable byte-alignment restriction
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
glTexImage2D(
GL_TEXTURE_2D,
0,
GL_RED,
ftGlyph->bitmap.width,
ftGlyph->bitmap.rows,
0,
GL_RED,
GL_UNSIGNED_BYTE,
ftGlyph->bitmap.buffer
);
// Set texture options
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glBindTexture(GL_TEXTURE_2D, 0);
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
}
/****************************************************************************************
* cOglFont
****************************************************************************************/
FT_Library cOglFont::ftLib = 0;
cList<cOglFont> *cOglFont::fonts = 0;
bool cOglFont::initiated = false;
cOglFont::cOglFont(const char *fontName, int charHeight) : name(fontName) {
size = charHeight;
height = 0;
bottom = 0;
int error = FT_New_Face(ftLib, fontName, 0, &face);
if (error)
esyslog("[softhddev]ERROR: failed to open %s!", *name);
FT_Set_Char_Size(face, 0, charHeight * 64, 0, 0);
height = (face->size->metrics.ascender - face->size->metrics.descender + 63) / 64;
bottom = abs((face->size->metrics.descender - 63) / 64);
}
cOglFont::~cOglFont(void) {
FT_Done_Face(face);
}
cOglFont *cOglFont::Get(const char *name, int charHeight) {
if (!fonts)
Init();
cOglFont *font;
for (font = fonts->First(); font; font = fonts->Next(font))
if (!strcmp(font->Name(), name) && charHeight == font->Size()) {
return font;
}
font = new cOglFont(name, charHeight);
fonts->Add(font);
return font;
}
void cOglFont::Init(void) {
fonts = new cList<cOglFont>;
if (FT_Init_FreeType(&ftLib))
esyslog("[softhddev]failed to initialize FreeType library!");
initiated = true;
}
void cOglFont::Cleanup(void) {
if (!initiated)
return;
delete fonts;
fonts = 0;
if (FT_Done_FreeType(ftLib))
esyslog("failed to deinitialize FreeType library!");
}
cOglGlyph* cOglFont::Glyph(uint charCode) const {
// Non-breaking space:
if (charCode == 0xA0)
charCode = 0x20;
// Lookup in cache:
for (cOglGlyph *g = glyphCache.First(); g; g = glyphCache.Next(g)) {
if (g->CharCode() == charCode) {
return g;
}
}
FT_UInt glyph_index = FT_Get_Char_Index(face, charCode);
FT_Int32 loadFlags = FT_LOAD_NO_BITMAP;
// Load glyph image into the slot (erase previous one):
int error = FT_Load_Glyph(face, glyph_index, loadFlags);
if (error) {
esyslog("[softhddev]FT_Error (0x%02x) : %s\n", FT_Errors[error].code, FT_Errors[error].message);
return NULL;
}
FT_Glyph ftGlyph;
FT_Stroker stroker;
error = FT_Stroker_New( ftLib, &stroker );
if (error) {
esyslog("[softhddev]FT_Stroker_New FT_Error (0x%02x) : %s\n", FT_Errors[error].code, FT_Errors[error].message);
return NULL;
}
float outlineWidth = 0.25f;
FT_Stroker_Set(stroker,
(int)(outlineWidth * 64),
FT_STROKER_LINECAP_ROUND,
FT_STROKER_LINEJOIN_ROUND,
0);
error = FT_Get_Glyph(face->glyph, &ftGlyph);
if (error) {
esyslog("[softhddev]FT_Get_Glyph FT_Error (0x%02x) : %s\n", FT_Errors[error].code, FT_Errors[error].message);
return NULL;
}
error = FT_Glyph_StrokeBorder( &ftGlyph, stroker, 0, 1 );
if ( error ) {
esyslog("[softhddev]FT_Glyph_StrokeBorder FT_Error (0x%02x) : %s\n", FT_Errors[error].code, FT_Errors[error].message);
return NULL;
}
FT_Stroker_Done(stroker);
error = FT_Glyph_To_Bitmap( &ftGlyph, FT_RENDER_MODE_NORMAL, 0, 1);
if (error) {
esyslog("[softhddev]FT_Glyph_To_Bitmap FT_Error (0x%02x) : %s\n", FT_Errors[error].code, FT_Errors[error].message);
return NULL;
}
cOglGlyph *Glyph = new cOglGlyph(charCode, (FT_BitmapGlyph)ftGlyph);
glyphCache.Add(Glyph);
FT_Done_Glyph(ftGlyph);
return Glyph;
}
int cOglFont::Kerning(cOglGlyph *glyph, uint prevSym) const {
int kerning = 0;
if (glyph && prevSym) {
kerning = glyph->GetKerningCache(prevSym);
if (kerning == KERNING_UNKNOWN) {
FT_Vector delta;
FT_UInt glyph_index = FT_Get_Char_Index(face, glyph->CharCode());
FT_UInt glyph_index_prev = FT_Get_Char_Index(face, prevSym);
FT_Get_Kerning(face, glyph_index_prev, glyph_index, FT_KERNING_DEFAULT, &delta);
kerning = delta.x / 64;
glyph->SetKerningCache(prevSym, kerning);
}
}
return kerning;
}
/****************************************************************************************
* cOglFb
****************************************************************************************/
cOglFb::cOglFb(GLint width, GLint height, GLint viewPortWidth, GLint viewPortHeight) {
initiated = false;
fb = 0;
texture = 0;
this->width = width;
this->height = height;
this->viewPortWidth = viewPortWidth;
this->viewPortHeight = viewPortHeight;
if (width != viewPortWidth || height != viewPortHeight)
scrollable = true;
else
scrollable = false;
}
cOglFb::~cOglFb(void) {
glDeleteTextures(1, &texture);
glDeleteFramebuffers(1, &fb);
}
bool cOglFb::Init(void) {
initiated = true;
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
glGenFramebuffers(1, &fb);
glBindFramebuffer(GL_FRAMEBUFFER, fb);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);
if(glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
esyslog("[softhddev]ERROR: Framebuffer is not complete!\n");
return false;
}
return true;
}
void cOglFb::Bind(void) {
if (!initiated)
Init();
glViewport(0, 0, width, height);
glBindFramebuffer(GL_FRAMEBUFFER, fb);
}
void cOglFb::BindRead(void) {
glBindFramebuffer(GL_READ_FRAMEBUFFER, fb);
}
void cOglFb::BindWrite(void) {
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fb);
}
void cOglFb::Unbind(void) {
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glBindTexture(GL_TEXTURE_2D, 0);
}
bool cOglFb::BindTexture(void) {
if (!initiated)
return false;
glBindTexture(GL_TEXTURE_2D, texture);
return true;
}
void cOglFb::Blit(GLint destX1, GLint destY1, GLint destX2, GLint destY2) {
glBlitFramebuffer(0, 0, width, height, destX1, destY1, destX2, destY2, GL_COLOR_BUFFER_BIT, GL_NEAREST);
glFlush();
}
/****************************************************************************************
* cOglOutputFb
****************************************************************************************/
cOglOutputFb::cOglOutputFb(GLint width, GLint height) : cOglFb(width, height, width, height) {
surface = 0;
}
cOglOutputFb::~cOglOutputFb(void) {
glVDPAUUnregisterSurfaceNV(surface);
}
bool cOglOutputFb::Init(void) {
//fetching osd vdpau output surface from softhddevice
void *vdpauOutputSurface = GetVDPAUOutputSurface();
glGenTextures(1, &texture);
//register surface for texture
surface = glVDPAURegisterOutputSurfaceNV(vdpauOutputSurface, GL_TEXTURE_2D, 1, &texture);
//set write access to surface
glVDPAUSurfaceAccessNV(surface, GL_WRITE_DISCARD_NV);
//create framebuffer
glVDPAUMapSurfacesNV (1, &surface);
glBindTexture(GL_TEXTURE_2D, texture);
glGenFramebuffers(1, &fb);
glBindFramebuffer(GL_FRAMEBUFFER, fb);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);
if(glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
esyslog("[softhddev]ERROR::cOglOutputFb: Framebuffer is not complete!");
return false;
}
return true;
}
void cOglOutputFb::BindWrite(void) {
glVDPAUMapSurfacesNV(1, &surface);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fb);
}
void cOglOutputFb::Unbind(void) {
glVDPAUUnmapSurfacesNV(1, &surface);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
}
/****************************************************************************************
* cOglVb
****************************************************************************************/
static cOglVb *VertexBuffers[vbCount];
cOglVb::cOglVb(int type) {
this->type = (eVertexBufferType)type;
vao = 0;
vbo = 0;
sizeVertex1 = 0;
sizeVertex2 = 0;
numVertices = 0;
drawMode = 0;
}
cOglVb::~cOglVb(void) {
}
bool cOglVb::Init(void) {
if (type == vbTexture) {
//Texture VBO definition
sizeVertex1 = 2;
sizeVertex2 = 2;
numVertices = 6;
drawMode = GL_TRIANGLES;
shader = stTexture;
} else if (type == vbRect) {
//Rectangle VBO definition
sizeVertex1 = 2;
sizeVertex2 = 0;
numVertices = 4;
drawMode = GL_TRIANGLE_FAN;
shader = stRect;
} else if (type == vbEllipse) {
//Ellipse VBO definition
sizeVertex1 = 2;
sizeVertex2 = 0;
numVertices = 182;
drawMode = GL_TRIANGLE_FAN;
shader = stRect;
} else if (type == vbSlope) {
//Slope VBO definition
sizeVertex1 = 2;
sizeVertex2 = 0;
numVertices = 102;
drawMode = GL_TRIANGLE_FAN;
shader = stRect;
} else if (type == vbText) {
//Text VBO definition
sizeVertex1 = 2;
sizeVertex2 = 2;
numVertices = 6;
drawMode = GL_TRIANGLES;
shader = stText;
}
glGenVertexArrays(1, &vao);
glGenBuffers(1, &vbo);
glBindVertexArray(vao);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof(GLfloat) * (sizeVertex1 + sizeVertex2) * numVertices, NULL, GL_DYNAMIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, sizeVertex1, GL_FLOAT, GL_FALSE, (sizeVertex1 + sizeVertex2) * sizeof(GLfloat), (GLvoid*)0);
if (sizeVertex2 > 0) {
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, sizeVertex2, GL_FLOAT, GL_FALSE, (sizeVertex1 + sizeVertex2) * sizeof(GLfloat), (GLvoid*)(sizeVertex1 * sizeof(GLfloat)));
}
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(0);
return true;
}
void cOglVb::Bind(void) {
glBindVertexArray(vao);
}
void cOglVb::Unbind(void) {
glBindVertexArray(0);
}
void cOglVb::ActivateShader(void) {
Shaders[shader]->Use();
}
void cOglVb::EnableBlending(void) {
glEnable(GL_BLEND);
glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
}
void cOglVb::DisableBlending(void) {
glDisable(GL_BLEND);
}
void cOglVb::SetShaderColor(GLint color) {
glm::vec4 col;
ConvertColor(color, col);
Shaders[shader]->SetVector4f("inColor", col.r, col.g, col.b, col.a);
}
void cOglVb::SetShaderAlpha(GLint alpha) {
Shaders[shader]->SetVector4f("alpha", 1.0f, 1.0f, 1.0f, (GLfloat)(alpha) / 255.0f);
}
void cOglVb::SetShaderProjectionMatrix(GLint width, GLint height) {
glm::mat4 projection = glm::ortho(0.0f, (GLfloat)width, (GLfloat)height, 0.0f, -1.0f, 1.0f);
Shaders[shader]->SetMatrix4("projection", projection);
}
void cOglVb::SetVertexData(GLfloat *vertices, int count) {
if (count == 0)
count = numVertices;
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(GLfloat) * (sizeVertex1 + sizeVertex2) * count, vertices);
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
void cOglVb::DrawArrays(int count) {
if (count == 0)
count = numVertices;
glDrawArrays(drawMode, 0, count);
glFlush();
}
/****************************************************************************************
* cOpenGLCmd
****************************************************************************************/
//------------------ cOglCmdInitOutputFb --------------------
cOglCmdInitOutputFb::cOglCmdInitOutputFb(cOglOutputFb *oFb) : cOglCmd(NULL) {
this->oFb = oFb;
}
bool cOglCmdInitOutputFb::Execute(void) {
bool ok = oFb->Init();
oFb->Unbind();
return ok;
}
//------------------ cOglCmdInitFb --------------------
cOglCmdInitFb::cOglCmdInitFb(cOglFb *fb, cCondWait *wait) : cOglCmd(fb) {
this->wait = wait;
}
bool cOglCmdInitFb::Execute(void) {
bool ok = fb->Init();
fb->Unbind();
if (wait)
wait->Signal();
return ok;
}
//------------------ cOglCmdDeleteFb --------------------
cOglCmdDeleteFb::cOglCmdDeleteFb(cOglFb *fb) : cOglCmd(fb) {
}
bool cOglCmdDeleteFb::Execute(void) {
delete fb;
return true;
}
//------------------ cOglCmdRenderFbToBufferFb --------------------
cOglCmdRenderFbToBufferFb::cOglCmdRenderFbToBufferFb(cOglFb *fb, cOglFb *buffer, GLint x, GLint y, GLint transparency, GLint drawPortX, GLint drawPortY) : cOglCmd(fb) {
this->buffer = buffer;
this->x = (GLfloat)x;
this->y = (GLfloat)y;
this->drawPortX = (GLfloat)drawPortX;
this->drawPortY = (GLfloat)drawPortY;
this->transparency = transparency;
}
bool cOglCmdRenderFbToBufferFb::Execute(void) {
GLfloat x2 = x + fb->ViewportWidth(); //right
GLfloat y2 = y + fb->ViewportHeight(); //bottom
GLfloat texX1 = drawPortX / (GLfloat)fb->Width();
GLfloat texY1 = drawPortY / (GLfloat)fb->Height();
GLfloat texX2 = texX1 + 1.0f;
GLfloat texY2 = texY1 + 1.0f;
if (fb->Scrollable()) {
GLfloat pageHeight = (GLfloat)fb->ViewportHeight() / (GLfloat)fb->Height();
texX1 = abs(drawPortX) / (GLfloat)fb->Width();
texY1 = 1.0f - pageHeight - abs(drawPortY) / (GLfloat)fb->Height();
texX2 = texX1 + (GLfloat)fb->ViewportWidth() / (GLfloat)fb->Width();
texY2 = texY1 + pageHeight;
}
GLfloat quadVertices[] = {
// Pos // TexCoords
x , y , texX1, texY2, //left top
x , y2, texX1, texY1, //left bottom
x2, y2, texX2, texY1, //right bottom
x , y , texX1, texY2, //left top
x2, y2, texX2, texY1, //right bottom
x2, y , texX2, texY2 //right top
};
VertexBuffers[vbTexture]->ActivateShader();
VertexBuffers[vbTexture]->SetShaderAlpha(transparency);
VertexBuffers[vbTexture]->SetShaderProjectionMatrix(buffer->Width(), buffer->Height());
buffer->Bind();
if (!fb->BindTexture())
return false;
VertexBuffers[vbTexture]->Bind();
VertexBuffers[vbTexture]->SetVertexData(quadVertices);
VertexBuffers[vbTexture]->DrawArrays();
VertexBuffers[vbTexture]->Unbind();
buffer->Unbind();
return true;
}
//------------------ cOglCmdCopyBufferToOutputFb --------------------
cOglCmdCopyBufferToOutputFb::cOglCmdCopyBufferToOutputFb(cOglFb *fb, cOglOutputFb *oFb, GLint x, GLint y) : cOglCmd(fb) {
this->oFb = oFb;
this->x = x;
this->y = y;
}
bool cOglCmdCopyBufferToOutputFb::Execute(void) {
fb->BindRead();
oFb->BindWrite();
fb->Blit(x, y + fb->Height(), x + fb->Width(), y);
oFb->Unbind();
ActivateOsd();
return true;
}
//------------------ cOglCmdFill --------------------
cOglCmdFill::cOglCmdFill(cOglFb *fb, GLint color) : cOglCmd(fb) {
this->color = color;
}
bool cOglCmdFill::Execute(void) {
glm::vec4 col;
ConvertColor(color, col);
fb->Bind();
glClearColor(col.r, col.g, col.b, col.a);
glClear(GL_COLOR_BUFFER_BIT);
fb->Unbind();
return true;
}
//------------------ cOglCmdDrawRectangle --------------------
cOglCmdDrawRectangle::cOglCmdDrawRectangle( cOglFb *fb, GLint x, GLint y, GLint width, GLint height, GLint color) : cOglCmd(fb) {
this->x = x;
this->y = y;
this->width = width;
this->height = height;
this->color = color;
}
bool cOglCmdDrawRectangle::Execute(void) {
GLfloat x1 = x;
GLfloat y1 = y;
GLfloat x2 = x + width;
GLfloat y2 = y + height;
GLfloat vertices[] = {
x1, y1, //left top
x2, y1, //right top
x2, y2, //right bottom
x1, y2 //left bottom
};
VertexBuffers[vbRect]->ActivateShader();
VertexBuffers[vbRect]->SetShaderColor(color);
VertexBuffers[vbRect]->SetShaderProjectionMatrix(fb->Width(), fb->Height());
fb->Bind();
VertexBuffers[vbRect]->DisableBlending();
VertexBuffers[vbRect]->Bind();
VertexBuffers[vbRect]->SetVertexData(vertices);
VertexBuffers[vbRect]->DrawArrays();
VertexBuffers[vbRect]->Unbind();
VertexBuffers[vbRect]->EnableBlending();
fb->Unbind();
return true;
}
//------------------ cOglCmdDrawEllipse --------------------
///quadrants:
///< 0 draws the entire ellipse
///< 1..4 draws only the first, second, third or fourth quadrant, respectively
///< 5..8 draws the right, top, left or bottom half, respectively
///< -1..-4 draws the inverted part of the given quadrant
cOglCmdDrawEllipse::cOglCmdDrawEllipse( cOglFb *fb, GLint x, GLint y, GLint width, GLint height, GLint color, GLint quadrants) : cOglCmd(fb) {
this->x = x;
this->y = y;
this->width = width;
this->height = height;
this->color = color;
this->quadrants = quadrants;
}
bool cOglCmdDrawEllipse::Execute(void) {
int numVertices = 0;
GLfloat *vertices = NULL;
switch (quadrants) {
case 0:
vertices = CreateVerticesFull(numVertices);
break;
case 1: case 2: case 3: case 4: case -1: case -2: case -3: case -4:
vertices = CreateVerticesQuadrant(numVertices);
break;
case 5: case 6: case 7: case 8:
vertices = CreateVerticesHalf(numVertices);
break;
default:
break;
}
VertexBuffers[vbEllipse]->ActivateShader();
VertexBuffers[vbEllipse]->SetShaderColor(color);
VertexBuffers[vbEllipse]->SetShaderProjectionMatrix(fb->Width(), fb->Height());
//not antialiased
fb->Bind();
VertexBuffers[vbEllipse]->DisableBlending();
VertexBuffers[vbEllipse]->Bind();
VertexBuffers[vbEllipse]->SetVertexData(vertices, numVertices);
VertexBuffers[vbEllipse]->DrawArrays(numVertices);
VertexBuffers[vbEllipse]->Unbind();
VertexBuffers[vbEllipse]->EnableBlending();
fb->Unbind();
delete[] vertices;
return true;
}
GLfloat *cOglCmdDrawEllipse::CreateVerticesFull(int &numVertices) {
int size = 364;
numVertices = size/2;
GLfloat radiusX = (GLfloat)width/2;
GLfloat radiusY = (GLfloat)height/2;
GLfloat *vertices = new GLfloat[size];
vertices[0] = x + radiusX;
vertices[1] = y + radiusY;
for (int i=0; i <= 180; i++) {
vertices[2*i+2] = x + radiusX + (GLfloat)cos(2*i * M_PI / 180.0f)*radiusX;
vertices[2*i+3] = y + radiusY - (GLfloat)sin(2*i * M_PI / 180.0f)*radiusY;
}
return vertices;
}
GLfloat *cOglCmdDrawEllipse::CreateVerticesQuadrant(int &numVertices) {
int size = 94;
numVertices = size/2;
GLfloat radiusX = (GLfloat)width;
GLfloat radiusY = (GLfloat)height;
GLint transX = 0;
GLint transY = 0;
GLint startAngle = 0;
GLfloat *vertices = new GLfloat[size];
switch (quadrants) {
case 1:
vertices[0] = x;
vertices[1] = y + height;
transY = radiusY;
break;
case 2:
vertices[0] = x + width;
vertices[1] = y + height;
transX = radiusX;
transY = radiusY;
startAngle = 90;
break;
case 3:
vertices[0] = x + width;
vertices[1] = y;
transX = radiusX;
startAngle = 180;
break;
case 4:
vertices[0] = x;
vertices[1] = y;
startAngle = 270;
break;
case -1:
vertices[0] = x + width;
vertices[1] = y;
transY = radiusY;
break;
case -2:
vertices[0] = x;
vertices[1] = y;
transX = radiusX;
transY = radiusY;
startAngle = 90;
break;
case -3:
vertices[0] = x;
vertices[1] = y + height;
transX = radiusX;
startAngle = 180;
break;
case -4:
vertices[0] = x + width;
vertices[1] = y + height;
startAngle = 270;
break;
default:
break;
}
for (int i=0; i <= 45; i++) {
vertices[2*i+2] = x + transX + (GLfloat)cos((2*i + startAngle) * M_PI / 180.0f)*radiusX;
vertices[2*i+3] = y + transY - (GLfloat)sin((2*i + startAngle) * M_PI / 180.0f)*radiusY;
}
return vertices;
}
GLfloat *cOglCmdDrawEllipse::CreateVerticesHalf(int &numVertices) {
int size = 184;
numVertices = size/2;
GLfloat radiusX = 0.0f;
GLfloat radiusY = 0.0f;
GLint transX = 0;
GLint transY = 0;
GLint startAngle = 0;
GLfloat *vertices = new GLfloat[size];
switch (quadrants) {
case 5:
radiusX = (GLfloat)width;
radiusY = (GLfloat)height/2;
vertices[0] = x;
vertices[1] = y + radiusY;
startAngle = 270;
transY = radiusY;
break;
case 6:
radiusX = (GLfloat)width/2;
radiusY = (GLfloat)height;
vertices[0] = x + radiusX;
vertices[1] = y + radiusY;
startAngle = 0;
transX = radiusX;
transY = radiusY;
break;
case 7:
radiusX = (GLfloat)width;
radiusY = (GLfloat)height/2;
vertices[0] = x + radiusX;
vertices[1] = y + radiusY;
startAngle = 90;
transX = radiusX;
transY = radiusY;
break;
case 8: