OSD

OSD Rendering Interface. More...

Classes
class	cDummyPixmap
	Dummy Pixmap for Skins. More...
class	cDummyOsd
	Dummy OSD. More...
class	cOglShader
	OpenGL OSD Vertex/Fragment Shader. More...
class	cOglGlyph
	OpenGL OSD Glyph of a Font. More...
class	cOglAtlasGlyph
	OpenGL OSD Glyph on a Texture Atlas. More...
class	cOglFontAtlas
	OpenGL OSD Texture Atlas for a Font. More...
class	cOglFont
	OpenGL OSD Representation of a VDR Font. More...
class	cOglFb
	OpenGL OSD Framebuffer/ Texture Object. More...
class	cOglOutputFb
	Main Framebuffer/ Texture Object for OSD. More...
class	cOglVb
	OpenGL OSD Vertex Buffers. More...
class	cOglCmd
	OpenGL Hardware Command. More...
class	cOglCmdInitOutputFb
	OpenGL command: Init the output framebuffer. More...
class	cOglCmdInitFb
	OpenGL command: Init a framebuffer. More...
class	cOglCmdDeleteFb
	OpenGL command: Delete a framebuffer. More...
class	cOglCmdRenderFbToBufferFb
	OpenGL command: Render a framebuffer to another framebuffer. More...
class	cOglCmdCopyBufferToOutputFb
	OpenGL command: Render a framebuffer to the output framebuffer. More...
class	cOglCmdFill
	OpenGL command: Fill a polygon. More...
class	cOglCmdBufferFill
	OpenGL command: Fill a framebuffer. More...
class	cOglCmdDrawRectangle
	OpenGL command: Draw a rectangle. More...
class	cOglCmdDrawEllipse
	OpenGL command: Draw an ellipse. More...
class	cOglCmdDrawSlope
	OpenGL command: Draw a slope. More...
class	cOglCmdDrawText
	OpenGL command: Draw a text. More...
class	cOglCmdDrawImage
	OpenGL command: Draw an image. More...
class	cOglCmdDrawTexture
	OpenGL command: Draw a texture. More...
class	cOglCmdStoreImage
	OpenGL command: Store image in the cache. More...
class	cOglCmdDropImage
	OpenGL command: Drop image from cache. More...
class	cOglThread
	OpenGL Commands Processing Thread. More...
class	cOglPixmap
	OpenGL Implementation of a cPixmap. More...
class	cOglOsd
	OpenGL OSD Implementation (GPU accelerated) More...
class	cSoftOsd
	Software Based OSD (CPU) More...
class	cSoftOsdProvider
	Plugin OSD provider. More...

Macros
#define	BORDERCOLOR   0x00000000
	OpenGL OSD (GPU)

Functions
static void	ConvertColor (const GLint &colARGB, glm::vec4 &col)
	OpenGL Color Conversion Helper.

Variables
static cOglShader *	Shaders [stCount]
	OpenGL Shaders Array.
static cOglVb *	VertexBuffers [vbCount]
	OpenGL Vertex Buffers Array.
const char *	rectVertexShader
	Rectangle Vertex Shader.
const char *	rectFragmentShader
	Rectangle Fragment Shader.
const char *	textureVertexShader
	Texture Vertex Shader.
const char *	textureFragmentShader
	Texture Fragment Shader.
const char *	textureFragmentShaderSwapBR
	Texture Fragment Shader (swapped blue/red)
const char *	textVertexShader
	Text Vertex Shader.
const char *	textFragmentShader
	Text Fragment Shader.

Detailed Description

OSD Rendering Interface.

Macro Definition Documentation

BORDERCOLOR

#define BORDERCOLOR   0x00000000

OpenGL OSD (GPU)

This is needed for the GLES2 GL_CLAMP_TO_BORDER workaround

Definition at line 53 of file openglosd.h.

Function Documentation

ConvertColor()

static void ConvertColor ( const GLint &  colARGB, glm::vec4 &  col  )

static

OpenGL Color Conversion Helper.

Translates color from ARGB value to glm::vec4

Definition at line 63 of file openglosd.cpp.

Referenced by cOglCmdFill::Execute(), cOglCmdBufferFill::Execute(), cOglVb::SetShaderBorderColor(), and cOglVb::SetShaderColor().

Variable Documentation

rectFragmentShader

const char* rectFragmentShader

Initial value:

=
"#version 100 \n\
precision mediump float; \
varying vec4 rectCol; \
\
void main() \
{ \
    gl_FragColor = rectCol; \
} \
"

Rectangle Fragment Shader.

Definition at line 48 of file openglshader.h.

Referenced by cOglShader::Load().

rectVertexShader

const char* rectVertexShader

Initial value:

=
"#version 100 \n\
\
attribute vec2 position; \
varying vec4 rectCol; \
uniform vec4 inColor; \
uniform mat4 projection; \
\
void main() \
{ \
    gl_Position = projection * vec4(position.x, position.y, 0.0, 1.0); \
    rectCol = inColor; \
} \
"

Rectangle Vertex Shader.

Definition at line 30 of file openglshader.h.

Referenced by cOglShader::Load().

Shaders

cOglShader* Shaders[stCount]

static

OpenGL Shaders Array.

Definition at line 75 of file openglosd.cpp.

Referenced by cOglVb::ActivateShader(), cOglThread::DeleteShaders(), cOglThread::InitShaders(), cOglVb::SetShaderAlpha(), cOglVb::SetShaderBorderColor(), cOglVb::SetShaderColor(), cOglVb::SetShaderProjectionMatrix(), and cOglVb::SetShaderTexture().

textFragmentShader

const char* textFragmentShader

Initial value:

=
"#version 100 \n\
precision mediump float; \
varying vec2 TexCoords; \
varying vec4 textColor; \
\
uniform sampler2D glyphTexture; \
\
void main() \
{  \
    vec4 sampled = vec4(1.0, 1.0, 1.0, texture2D(glyphTexture, TexCoords).r); \
    gl_FragColor = textColor * sampled; \
} \
"

Text Fragment Shader.

Definition at line 171 of file openglshader.h.

Referenced by cOglShader::Load().

textureFragmentShader

const char* textureFragmentShader

Initial value:

=
"#version 100 \n\
precision mediump float; \
varying vec2 TexCoords; \
varying vec4 alphaValue; \
varying vec4 bColorValue; \
\
uniform sampler2D screenTexture; \
\
float clamp_to_border_factor (vec2 coords) \
{ \
    bvec2 out1 = greaterThan (coords, vec2 (1,1)); \
    bvec2 out2 = lessThan (coords, vec2 (0,0)); \
    bool do_clamp = (any (out1) || any (out2)); \
    return float (!do_clamp); \
} \
\
void main() \
{ \
    vec4 color = texture2D(screenTexture, TexCoords) * alphaValue; \
    float f = clamp_to_border_factor (TexCoords); \
    gl_FragColor = mix (bColorValue, color, f); \
} \
"

Texture Fragment Shader.

Definition at line 88 of file openglshader.h.

Referenced by cOglShader::Load().

textureFragmentShaderSwapBR

const char* textureFragmentShaderSwapBR

Initial value:

=
"#version 100 \n\
precision mediump float; \
varying vec2 TexCoords; \
varying vec4 alphaValue; \
varying vec4 bColorValue; \
\
uniform sampler2D screenTexture; \
\
float clamp_to_border_factor (vec2 coords) \
{ \
    bvec2 out1 = greaterThan (coords, vec2 (1,1)); \
    bvec2 out2 = lessThan (coords, vec2 (0,0)); \
    bool do_clamp = (any (out1) || any (out2)); \
    return float (!do_clamp); \
} \
\
void main() \
{ \
    vec4 color = texture2D(screenTexture, TexCoords) * alphaValue; \
    vec4 color_swapped = vec4(color.b, color.g, color.r, color.a); \
    float f = clamp_to_border_factor (TexCoords); \
    gl_FragColor = mix (bColorValue, color_swapped, f); \
} \
"

Texture Fragment Shader (swapped blue/red)

In difference to the textureFragmentShader this one does a blue/red color component swap

Definition at line 119 of file openglshader.h.

Referenced by cOglShader::Load().

textureVertexShader

const char* textureVertexShader

Initial value:

=
"#version 100 \n\
\
attribute vec2 position; \
attribute vec2 texCoords; \
\
varying vec2 TexCoords; \
varying vec4 alphaValue;\
varying vec4 bColorValue;\
\
uniform vec4 bColor; \
uniform mat4 projection; \
uniform vec4 alpha; \
\
void main() \
{ \
    gl_Position = projection * vec4(position.x, position.y, 0.0, 1.0); \
    TexCoords = texCoords; \
    alphaValue = alpha; \
    bColorValue = bColor; \
} \
"

Texture Vertex Shader.

Definition at line 62 of file openglshader.h.

Referenced by cOglShader::Load().

textVertexShader

const char* textVertexShader

Initial value:

=
"#version 100 \n\
\
attribute vec2 position; \
attribute vec2 texCoords; \
\
varying vec2 TexCoords; \
varying 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; \
} \
"

Text Vertex Shader.

Definition at line 148 of file openglshader.h.

Referenced by cOglShader::Load().

VertexBuffers

cOglVb* VertexBuffers[vbCount]

static

OpenGL Vertex Buffers Array.

Definition at line 82 of file openglosd.cpp.

Referenced by cOglThread::DeleteVertexBuffers(), cOglCmdRenderFbToBufferFb::Execute(), cOglCmdCopyBufferToOutputFb::Execute(), cOglCmdDrawRectangle::Execute(), cOglCmdDrawEllipse::Execute(), cOglCmdDrawSlope::Execute(), cOglCmdDrawText::Execute(), cOglCmdDrawImage::Execute(), cOglCmdDrawTexture::Execute(), cOglThread::InitOpenGL(), and cOglThread::InitVertexBuffers().