void DrawMedianRect(GfxTexture* texture, float x0, float y0, float x1, float y1, GfxTexture* render_target)
{
if(render_target)
{
glBindFramebuffer(GL_FRAMEBUFFER,render_target->GetFramebufferId());
glViewport ( 0, 0, render_target->GetWidth(), render_target->GetHeight() );
check();
}
glUseProgram(GMedianProg.GetId()); check();
glUniform2f(glGetUniformLocation(GMedianProg.GetId(),"offset"),x0,y0);
glUniform2f(glGetUniformLocation(GMedianProg.GetId(),"scale"),x1-x0,y1-y0);
glUniform1i(glGetUniformLocation(GMedianProg.GetId(),"tex"), 0);
glUniform2f(glGetUniformLocation(GMedianProg.GetId(),"texelsize"),1.f/texture->GetWidth(),1.f/texture->GetHeight());
check();
glBindBuffer(GL_ARRAY_BUFFER, GQuadVertexBuffer); check();
glBindTexture(GL_TEXTURE_2D,texture->GetId()); check();
GLuint loc = glGetAttribLocation(GSimpleProg.GetId(),"vertex");
glVertexAttribPointer(loc, 4, GL_FLOAT, 0, 16, 0); check();
glEnableVertexAttribArray(loc); check();
glDrawArrays ( GL_TRIANGLE_STRIP, 0, 4 ); check();
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindTexture(GL_TEXTURE_2D, 0);
if(render_target)
{
//glFinish(); check();
//glFlush(); check();
glBindFramebuffer(GL_FRAMEBUFFER,0);
glViewport ( 0, 0, GScreenWidth, GScreenHeight );
}
}
void DrawYUVTextureRect(GfxTexture* ytexture, GfxTexture* utexture, GfxTexture* vtexture, float x0, float y0, float x1, float y1, GfxTexture* render_target, int whichTexture)
{
if(render_target)
{
glBindFramebuffer(GL_FRAMEBUFFER,render_target->GetFramebufferId());
glViewport ( 0, 0, render_target->GetWidth(), render_target->GetHeight() );
check();
}
glUseProgram(GYUVProg.GetId()); check();
glUniform2f(glGetUniformLocation(GYUVProg.GetId(),"offset"),x0,y0);
glUniform2f(glGetUniformLocation(GYUVProg.GetId(),"scale"),x1-x0,y1-y0);
glUniform1i(glGetUniformLocation(GYUVProg.GetId(),"tex0"), 0);
glUniform1i(glGetUniformLocation(GYUVProg.GetId(),"tex1"), 1);
glUniform1i(glGetUniformLocation(GYUVProg.GetId(),"tex2"), 2);
check();
if(whichTexture == 0)
{
glBindBuffer(GL_ARRAY_BUFFER, GQuadVertexBuffer); check();
} else {
}
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D,ytexture->GetId()); check();
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D,utexture->GetId()); check();
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D,vtexture->GetId()); check();
glActiveTexture(GL_TEXTURE0);
GLuint loc = glGetAttribLocation(GYUVProg.GetId(),"vertex");
glVertexAttribPointer(loc, 4, GL_FLOAT, 0, 16, 0); check();
glEnableVertexAttribArray(loc); check();
glDrawArrays ( GL_TRIANGLE_STRIP, 0, 4 ); check();
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindTexture(GL_TEXTURE_2D, 0);
if(render_target)
{
//glFinish(); check();
//glFlush(); check();
glBindFramebuffer(GL_FRAMEBUFFER,0);
glViewport ( 0, 0, GScreenWidth, GScreenHeight );
}
}
void DrawTextureRect(GfxTexture* texture, float x0, float y0, float x1, float y1, GfxTexture* render_target, int whichTexture, float x, float y)
{
//float x = 0.11;
//float y = 0.11;
if(render_target)
{
glBindFramebuffer(GL_FRAMEBUFFER,render_target->GetFramebufferId());
glViewport ( 0, 0, render_target->GetWidth(), render_target->GetHeight() );
check();
}
glUseProgram(GSimpleProg.GetId()); check();
glUniform2f(glGetUniformLocation(GSimpleProg.GetId(),"offset"),x0,y0);
glUniform2f(glGetUniformLocation(GSimpleProg.GetId(),"scale"),x1-x0,y1-y0);
glUniform1i(glGetUniformLocation(GSimpleProg.GetId(),"tex"), 0);
check();
if(whichTexture == 0)
{
glBindBuffer(GL_ARRAY_BUFFER, GQuadVertexBuffer); check();
} else {
}
glBindTexture(GL_TEXTURE_2D,texture->GetId()); check();
GLuint loc = glGetAttribLocation(GSimpleProg.GetId(),"vertex");
glVertexAttribPointer(loc, 4, GL_FLOAT, 0, 16, 0); check();
glEnableVertexAttribArray(loc); check();
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDrawArrays ( GL_TRIANGLE_STRIP, 0, 4 ); check();
glDisable(GL_BLEND);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindTexture(GL_TEXTURE_2D, 0);
if(render_target)
{
//glFinish(); check();
//glFlush(); check();
glBindFramebuffer(GL_FRAMEBUFFER,0);
glViewport ( 0, 0, GScreenWidth, GScreenHeight );
}
}
void DrawTextureRect(GfxTexture* texture, float x0, float y0, float x1, float y1)
{
glUseProgram(GSimpleProg.GetId());
check();
glUniform2f(glGetUniformLocation(GSimpleProg.GetId(),"offset"),x0,y0);
glUniform2f(glGetUniformLocation(GSimpleProg.GetId(),"scale"),x1-x0,y1-y0);
glUniform1i(glGetUniformLocation(GSimpleProg.GetId(),"tex"), 0);
check();
glBindBuffer(GL_ARRAY_BUFFER, GQuadVertexBuffer);
check();
glBindTexture(GL_TEXTURE_2D,texture->GetId());
check();
GLuint loc = glGetAttribLocation(GSimpleProg.GetId(),"vertex");
check();
glVertexAttribPointer(loc, 4, GL_FLOAT, 0, 16, 0);
check();
glEnableVertexAttribArray(loc);
check();
glDrawArrays ( GL_TRIANGLE_STRIP, 0, 4 );
check();
glFinish();
check();
glFlush();
check();
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindTexture(GL_TEXTURE_2D, 0);
}
void InitGraphics()
{
bcm_host_init();
int32_t success = 0;
EGLBoolean result;
EGLint num_config;
static EGL_DISPMANX_WINDOW_T nativewindow;
DISPMANX_ELEMENT_HANDLE_T dispman_element;
DISPMANX_DISPLAY_HANDLE_T dispman_display;
DISPMANX_UPDATE_HANDLE_T dispman_update;
VC_RECT_T dst_rect;
VC_RECT_T src_rect;
static const EGLint attribute_list[] =
{
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_NONE
};
static const EGLint context_attributes[] =
{
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
EGLConfig config;
// get an EGL display connection
GDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
assert(GDisplay!=EGL_NO_DISPLAY);
check();
// initialize the EGL display connection
result = eglInitialize(GDisplay, NULL, NULL);
assert(EGL_FALSE != result);
check();
// get an appropriate EGL frame buffer configuration
result = eglChooseConfig(GDisplay, attribute_list, &config, 1, &num_config);
assert(EGL_FALSE != result);
check();
// get an appropriate EGL frame buffer configuration
result = eglBindAPI(EGL_OPENGL_ES_API);
assert(EGL_FALSE != result);
check();
// create an EGL rendering context
GContext = eglCreateContext(GDisplay, config, EGL_NO_CONTEXT, context_attributes);
assert(GContext!=EGL_NO_CONTEXT);
check();
// create an EGL window surface
success = graphics_get_display_size(0 /* LCD */, &GScreenWidth, &GScreenHeight);
assert( success >= 0 );
dst_rect.x = 0;
dst_rect.y = 0;
dst_rect.width = GScreenWidth;
dst_rect.height = GScreenHeight;
src_rect.x = 0;
src_rect.y = 0;
src_rect.width = GScreenWidth << 16;
src_rect.height = GScreenHeight << 16;
dispman_display = vc_dispmanx_display_open( 0 /* LCD */);
dispman_update = vc_dispmanx_update_start( 0 );
dispman_element = vc_dispmanx_element_add ( dispman_update, dispman_display,
0/*layer*/, &dst_rect, 0/*src*/,
&src_rect, DISPMANX_PROTECTION_NONE, 0 /*alpha*/, 0/*clamp*/, (DISPMANX_TRANSFORM_T)0/*transform*/);
nativewindow.element = dispman_element;
nativewindow.width = GScreenWidth;
nativewindow.height = GScreenHeight;
vc_dispmanx_update_submit_sync( dispman_update );
check();
GSurface = eglCreateWindowSurface( GDisplay, config, &nativewindow, NULL );
assert(GSurface != EGL_NO_SURFACE);
check();
// connect the context to the surface
result = eglMakeCurrent(GDisplay, GSurface, GSurface, GContext);
assert(EGL_FALSE != result);
check();
// Set background color and clear buffers
glClearColor(0.15f, 0.25f, 0.35f, 1.0f);
glClear( GL_COLOR_BUFFER_BIT );
//load the test shaders
GSimpleVS.LoadVertexShader("simplevertshader.glsl");
GSimpleFS.LoadFragmentShader("simplefragshader.glsl");
GSimpleProg.Create(&GSimpleVS,&GSimpleFS);
check();
glUseProgram(GSimpleProg.GetId());
check();
//create an ickle vertex buffer
static const GLfloat quad_vertex_positions[] = {
0.0f, 0.0f, 1.0f, 1.0f,
1.0f, 0.0f, 1.0f, 1.0f,
0.0f, 1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f, 1.0f
};
glGenBuffers(1, &GQuadVertexBuffer);
check();
glBindBuffer(GL_ARRAY_BUFFER, GQuadVertexBuffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(quad_vertex_positions), quad_vertex_positions, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
check();
}