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);
}
void
shader_defaultblend() {
if (RS->blendchange) {
rs_commit();
RS->blendchange = 0;
render_setblend(RS->R, BLEND_ONE, BLEND_ONE_MINUS_SRC_ALPHA);
}
}
void
shader_blend(int m1, int m2) {
if (m1 != GL_ONE || m2 != GL_ONE_MINUS_SRC_ALPHA) {
rs_commit();
RS->blendchange = 1;
glBlendFunc(m1,m2);
}
}
void
shader_defaultblend() {
if (RS->blendchange) {
rs_commit();
RS->blendchange = 0;
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
}
}
void
shader_program(int n) {
if (RS->current_program != n) {
rs_commit();
RS->current_program = n;
glUseProgram(RS->program[n].prog);
}
}
void
shader_texture(int id) {
if (RS->tex != id) {
rs_commit();
RS->tex = (GLuint)id;
glBindTexture(GL_TEXTURE_2D, id);
}
}
void
shader_texture(int id, int channel) {
assert(channel < MAX_TEXTURE_CHANNEL);
if (RS->tex[channel] != id) {
rs_commit();
RS->tex[channel] = id;
render_set(RS->R, TEXTURE, id, channel);
}
}
void
shader_blend(int m1, int m2) {
if (m1 != BLEND_GL_ONE || m2 != BLEND_GL_ONE_MINUS_SRC_ALPHA) {
rs_commit();
RS->blendchange = 1;
enum BLEND_FORMAT src = blend_mode(m1);
enum BLEND_FORMAT dst = blend_mode(m2);
render_setblend(RS->R, src, dst);
}
}
void
shader_st(int prog, float x, float y, float scale) {
rs_commit();
shader_program(prog);
struct program *p = &RS->program[prog];
if (!p || p->st == -1)
return;
glUniform4f(p->st, scale, scale, x, y);
}
void
shader_setuniform(int prog, int index, enum UNIFORM_FORMAT t, float *v) {
rs_commit();
struct program * p = &RS->program[prog];
assert(index >= 0 && index < p->uniform_number);
struct uniform *u = &p->uniform[index];
assert(t == u->type);
int n = shader_uniformsize(t);
memcpy(p->uniform_value + u->offset, v, n * sizeof(float));
p->reset_uniform = true;
p->uniform_change[index] = true;
}
void
shader_program(int n, struct material *m) {
struct program *p = &RS->program[n];
if (RS->current_program != n || p->reset_uniform || m) {
rs_commit();
}
if (RS->current_program != n) {
RS->current_program = n;
render_shader_bind(RS->R, p->prog);
p->material = NULL;
apply_uniform(p);
} else if (p->reset_uniform) {
apply_uniform(p);
}
if (m) {
material_apply(n, m);
}
}
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);
}
void
shader_flush() {
rs_commit();
}
void
shader_draw(const struct vertex_pack vb[4], uint32_t color, uint32_t additive) {
if (renderbuffer_add(&RS->vb, vb, color, additive)) {
rs_commit();
}
}
