void
shader_drawbuffer(struct render_buffer * rb, float tx, float ty, float scale) {
rs_commit();
RID glid = texture_glid(rb->texid);
if (glid == 0)
return;
shader_texture(glid, 0);
render_set(RS->R, VERTEXBUFFER, rb->vbid, 0);
float sx = scale;
float sy = scale;
screen_trans(&sx, &sy);
screen_trans(&tx, &ty);
float v[4] = { sx, sy, tx, ty };
// we should call shader_adduniform to add "st" uniform first
shader_setuniform(PROGRAM_RENDERBUFFER, 0, UNIFORM_FLOAT4, v);
shader_program(PROGRAM_RENDERBUFFER, NULL);
RS->drawcall++;
renderbuffer_commit(rb);
render_set(RS->R, VERTEXBUFFER, RS->vertex_buffer, 0);
}
static void
rs_commit() {
struct render_buffer * rb = &(RS->vb);
if (rb->object == 0)
return;
RS->drawcall++;
struct render *R = RS->R;
render_buffer_update(R, RS->vertex_buffer, rb->vb, 4 * rb->object);
renderbuffer_commit(rb);
rb->object = 0;
}
static void
rs_commit() {
struct render_buffer * rb = &(RS->vb);
if (rb->object == 0)
return;
RS->drawcall++;
glBindBuffer(GL_ARRAY_BUFFER, RS->vertex_buffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(struct quad) * rb->object, rb->vb, GL_DYNAMIC_DRAW);
renderbuffer_commit(rb);
rb->object = 0;
}
void
shader_drawbuffer(struct render_buffer * rb, float tx, float ty, float scale) {
rs_commit();
int glid = texture_glid(rb->texid);
if (glid == 0)
return;
shader_texture(glid);
shader_program(PROGRAM_RENDERBUFFER);
RS->drawcall++;
glBindBuffer(GL_ARRAY_BUFFER, rb->vbid);
float sx = scale;
float sy = scale;
screen_trans(&sx, &sy);
screen_trans(&tx, &ty);
struct program *p = &RS->program[RS->current_program];
glUniform4f(p->st, sx, sy, tx, ty);
renderbuffer_commit(rb);
}