void device_draw(gs_device_t *device, enum gs_draw_mode draw_mode,
uint32_t start_vert, uint32_t num_verts)
{
struct gs_index_buffer *ib = device->cur_index_buffer;
GLenum topology = convert_gs_topology(draw_mode);
gs_effect_t *effect = gs_get_effect();
struct gs_program *program;
if (!can_render(device))
goto fail;
if (effect)
gs_effect_update_params(effect);
program = get_shader_program(device);
if (!program)
goto fail;
load_vb_buffers(program, device->cur_vertex_buffer);
if (program != device->cur_program && device->cur_program) {
glUseProgram(0);
gl_success("glUseProgram (zero)");
}
if (program != device->cur_program) {
device->cur_program = program;
glUseProgram(program->obj);
if (!gl_success("glUseProgram"))
goto fail;
}
update_viewproj_matrix(device);
program_update_params(program);
if (ib) {
if (num_verts == 0)
num_verts = (uint32_t)device->cur_index_buffer->num;
glDrawElements(topology, num_verts, ib->gl_type,
(const GLvoid*)(start_vert * ib->width));
if (!gl_success("glDrawElements"))
goto fail;
} else {
if (num_verts == 0)
num_verts = (uint32_t)device->cur_vertex_buffer->num;
glDrawArrays(topology, start_vert, num_verts);
if (!gl_success("glDrawArrays"))
goto fail;
}
return;
fail:
blog(LOG_ERROR, "device_draw (GL) failed");
}
void device_draw(device_t device, enum gs_draw_mode draw_mode,
uint32_t start_vert, uint32_t num_verts)
{
struct gs_index_buffer *ib = device->cur_index_buffer;
GLenum topology = convert_gs_topology(draw_mode);
effect_t effect = gs_geteffect();
if (!can_render(device))
goto fail;
if (effect)
effect_updateparams(effect);
shader_update_textures(device->cur_pixel_shader);
update_viewproj_matrix(device);
#ifdef _DEBUG
if (!check_shader_pipeline_validity(device))
goto fail;
#endif
if (ib) {
if (num_verts == 0)
num_verts = (uint32_t)device->cur_index_buffer->num;
glDrawElements(topology, num_verts, ib->gl_type,
(const GLvoid*)(start_vert * ib->width));
if (!gl_success("glDrawElements"))
goto fail;
} else {
if (num_verts == 0)
num_verts = (uint32_t)device->cur_vertex_buffer->num;
glDrawArrays(topology, start_vert, num_verts);
if (!gl_success("glDrawArrays"))
goto fail;
}
return;
fail:
blog(LOG_ERROR, "device_draw (GL) failed");
}
