// Runs into main thread
static void particles_draw(particles_type *ps, float x, float y, float zoom)
{
if (!ps->alive || !ps->vertices || !ps->colors || !ps->texcoords) return;
GLfloat *vertices = ps->vertices;
GLfloat *colors = ps->colors;
GLshort *texcoords = ps->texcoords;
if (x < -10000) x = -10000;
if (x > 10000) x = 10000;
if (y < -10000) y = -10000;
if (y > 10000) y = 10000;
SDL_mutexP(ps->lock);
if (ps->blend_mode == BLEND_ADDITIVE) glBlendFunc(GL_SRC_ALPHA,GL_ONE);
if (multitexture_active) tglActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, ps->texture);
if (multitexture_active && main_fbo) {
tglActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, main_fbo->texture);
}
glTexCoordPointer(2, GL_SHORT, 0, texcoords);
glColorPointer(4, GL_FLOAT, 0, colors);
glVertexPointer(2, GL_FLOAT, 0, vertices);
glTranslatef(x, y, 0);
glPushMatrix();
glScalef(ps->zoom * zoom, ps->zoom * zoom, ps->zoom * zoom);
glRotatef(ps->rotate, 0, 0, 1);
if (ps->shader) useShader(ps->shader, 1, 1, main_fbo ? main_fbo->w : 1, main_fbo ? main_fbo->h : 1, 1, 1, 1, 1);
int remaining = ps->batch_nb;
while (remaining >= PARTICLES_PER_ARRAY)
{
glDrawArrays(GL_QUADS, remaining - PARTICLES_PER_ARRAY, PARTICLES_PER_ARRAY);
remaining -= PARTICLES_PER_ARRAY;
}
if (remaining) glDrawArrays(GL_QUADS, 0, remaining);
if (ps->shader) tglUseProgramObject(0);
glPopMatrix();
glTranslatef(-x, -y, 0);
if (ps->blend_mode) glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
if (multitexture_active && main_fbo) {
tglActiveTexture(GL_TEXTURE0);
}
SDL_mutexV(ps->lock);
}
void teTexture::Bind(u32 layer) const
{
switch(textureType)
{
case TT_2D: tglActiveTexture(GL_TEXTURE0 + layer); glBindTexture(GL_TEXTURE_2D, textureId); break;
case TT_RENDERBUFFER: tglBindRenderbuffer(textureId); break;
default: TE_ASSERT(0); break;
}
}
