static GLboolean
test_instancing(GLuint divisor)
{
static const GLfloat verts[4][2] = {
{-1, -1}, {1, -1}, {1, 1}, {-1, 1}
};
glVertexPointer(2, GL_FLOAT, 0, verts);
glEnableClientState(GL_VERTEX_ARRAY);
glVertexAttribPointer(PosAttrib, 2, GL_FLOAT, GL_FALSE, 0, Positions);
glVertexAttribPointer(ColorAttrib, 4, GL_FLOAT, GL_FALSE, 0, Colors);
glEnableVertexAttribArray(PosAttrib);
glEnableVertexAttribArray(ColorAttrib);
glVertexAttribDivisorARB(PosAttrib, 1);
/* advance color once every 'n' instances */
glVertexAttribDivisorARB(ColorAttrib, divisor);
glClear(GL_COLOR_BUFFER_BIT);
glUseProgram(Program);
glDrawArraysInstancedARB(GL_POLYGON, 0, 4, PRIMS);
glUseProgram(0);
{
GLint i;
GLint pos[4];
for (i = 0; i < PRIMS; i++) {
GLuint elem = i / divisor;
/* use glRasterPos to determine where to read a sample pixel */
glRasterPos2fv(Positions[i]);
glGetIntegerv(GL_CURRENT_RASTER_POSITION, pos);
if (!piglit_probe_pixel_rgba(pos[0], pos[1], Colors[elem])) {
fprintf(stderr, "%s: instance %d failed to draw correctly\n",
TestName, i);
fprintf(stderr, "%s: color instance divisor = %u\n",
TestName, divisor);
glutSwapBuffers();
return GL_FALSE;
}
}
}
glDisableClientState(GL_VERTEX_ARRAY);
glDisableVertexAttribArray(PosAttrib);
glDisableVertexAttribArray(ColorAttrib);
glutSwapBuffers();
return GL_TRUE;
}
void bglVertex2fv(const float vec[2])
{
switch (curmode) {
case GL_POINTS:
if (pointhack) {
glRasterPos2fv(vec);
glBitmap(pointhack, pointhack, (float)pointhack / 2, pointhack / 2, 0.0, 0.0, Squaredot);
}
else {
glVertex2fv(vec);
}
break;
}
}
// --------------------------------------------------------------------------------------------------------
void kDisplayString ( const std::string & str, const KVector & position, void * font )
{
std::string replaced(str);
kStringReplace(replaced, "\\n", "\n");
if (font == GLUT_STROKE_ROMAN || font == GLUT_STROKE_MONO_ROMAN)
{
kStrokeString(replaced, position, font);
}
else
{
glRasterPos2fv(position.getValues());
kBitmapString(replaced, position, font);
}
}
void display(void)
{
float rp[2];
blur_(xw, yw, pxa);
glClear(GL_COLOR_BUFFER_BIT);
rp[0]=-((float)*xw)/xwidth; rp[1]=-((float)*yw)/ywidth;
glRasterPos2fv(rp);
glDrawPixels(*xw, *yw, GL_RGBA, GL_UNSIGNED_BYTE, pxa);
glFlush();
glutSwapBuffers();
}
void CFontDisplay::display(int fontsize,char *str,GLfloat *fontlocation,GLfloat *fontcolor)
{
if (fontcolor==NULL)
{
fontcolor=m_fontcolor;
}
if (fontlocation==NULL)
{
fontlocation=m_fontlocation;
}
//glClear(GL_COLOR_BUFFER_BIT);
selectFont(fontsize, DEFAULT_CHARSET, "Times New Roman"); //默认设定
glColor3fv(fontcolor);
glRasterPos2fv(fontlocation);
// DrawString("Hello, World!");
// glRasterPos2f(0.5,0.8);
drawCNString(str);
// drawChar_To_Texture(("我"));
// drawChar_To_Texture("ff");
// glutSwapBuffers();
}
void VisualizerPlot1D::draw()
{
glColor3f( _params.color.x, _params.color.y, _params.color.z );
draw_frame2D( _wnd_rect );
draw_axes2D( _wnd_rect );
glRasterPos2fv( _wnd_rect.minpt );
glPrint( _caption );
if( !cursor()->on_pause() )
{
_coords.clear();
cursor()->snapshort( storage() );
if( cursor()->count() < 1 )
return;
std::vector<float> data = storage()->read_elem( cursor()->count()-1 );
if( _coords.capacity() == 0 )
{
AllocGlBuffers( data.size() );
}
GLfloat dt = _wnd_rect.len[0] / data.size();
GLfloat t = _wnd_rect.len[0] * 0.5f;
for( long i = 0; i < (long)data.size(); ++i )
{
_coords.push_back( _wnd_rect.center[0] + t );
_coords.push_back( _wnd_rect.center[1] + _params.scale * data[i] );
_coords.push_back( 0 );
t -= dt;
}
}
glLineWidth( 2. );
glColor3f( _params.color.x, _params.color.y, _params.color.z );
draw_arrays( &_coords[0], _coords.size() / 3 );
}
M(void, glRasterPos2fv, jobject v) {
glRasterPos2fv(BUFF(GLfloat, v));
}
/////////////////////////////////////////////////////////
// Render
//
void GEMglRasterPos2fv :: render(GemState *state) {
glRasterPos2fv (v);
}
void __glXDisp_RasterPos2fv(GLbyte *pc)
{
glRasterPos2fv(
(GLfloat *)(pc + 0)
);
}
static GLboolean
test_instancing(GLuint divisor)
{
static const GLfloat verts[4][2] = {
{-1, -1}, {1, -1}, {1, 1}, {-1, 1}
};
GLuint vbo;
uintptr_t offset = 0;
if (use_vbo) {
glGenBuffers(1, &vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferData(GL_ARRAY_BUFFER,
sizeof(verts) + sizeof(Positions) + sizeof(Colors),
NULL,
GL_STATIC_DRAW);
glBufferSubData(GL_ARRAY_BUFFER, offset, sizeof(verts), verts);
glVertexPointer(2, GL_FLOAT, 0, (void*) offset);
offset += sizeof(verts);
glBufferSubData(GL_ARRAY_BUFFER, offset, sizeof(Positions), Positions);
glVertexAttribPointer(PosAttrib, 2, GL_FLOAT, GL_FALSE, 0, (void*) offset);
offset += sizeof(Positions);
glBufferSubData(GL_ARRAY_BUFFER, offset, sizeof(Colors), Colors);
glVertexAttribPointer(ColorAttrib, 4, GL_FLOAT, GL_FALSE, 0, (void*) offset);
offset += sizeof(Colors);
glBindBuffer(GL_ARRAY_BUFFER, 0);
} else {
glVertexPointer(2, GL_FLOAT, 0, verts);
glVertexAttribPointer(PosAttrib, 2, GL_FLOAT, GL_FALSE, 0, Positions);
glVertexAttribPointer(ColorAttrib, 4, GL_FLOAT, GL_FALSE, 0, Colors);
}
glEnableClientState(GL_VERTEX_ARRAY);
glEnableVertexAttribArray(PosAttrib);
glEnableVertexAttribArray(ColorAttrib);
glVertexAttribDivisorARB(PosAttrib, 1);
/* advance color once every 'n' instances */
glVertexAttribDivisorARB(ColorAttrib, divisor);
glClear(GL_COLOR_BUFFER_BIT);
glUseProgram(Program);
glDrawArraysInstancedARB(GL_POLYGON, 0, 4, PRIMS);
glUseProgram(0);
if (use_vbo) {
glDeleteBuffers(1, &vbo);
}
{
GLint i;
GLint pos[4];
for (i = 0; i < PRIMS; i++) {
GLuint elem = i / divisor;
/* use glRasterPos to determine where to read a sample pixel */
glRasterPos2fv(Positions[i]);
glGetIntegerv(GL_CURRENT_RASTER_POSITION, pos);
if (!piglit_probe_pixel_rgba(pos[0], pos[1], Colors[elem])) {
fprintf(stderr, "%s: instance %d failed to draw correctly\n",
TestName, i);
fprintf(stderr, "%s: color instance divisor = %u\n",
TestName, divisor);
piglit_present_results();
return GL_FALSE;
}
}
}
glDisableClientState(GL_VERTEX_ARRAY);
glDisableVertexAttribArray(PosAttrib);
glDisableVertexAttribArray(ColorAttrib);
piglit_present_results();
return GL_TRUE;
}