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/*************************************************************************/
/* rasterizer_rd.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "rasterizer_rd.h"
void RasterizerRD::prepare_for_blitting_render_targets() {
RD::get_singleton()->prepare_screen_for_drawing();
}
void RasterizerRD::blit_render_targets_to_screen(int p_screen, const BlitToScreen *p_render_targets, int p_amount) {
RD::DrawListID draw_list = RD::get_singleton()->draw_list_begin_for_screen(p_screen);
for (int i = 0; i < p_amount; i++) {
RID texture = storage->render_target_get_texture(p_render_targets[i].render_target);
ERR_CONTINUE(texture.is_null());
RID rd_texture = storage->texture_get_rd_texture(texture);
ERR_CONTINUE(rd_texture.is_null());
if (!render_target_descriptors.has(rd_texture) || !RD::get_singleton()->uniform_set_is_valid(render_target_descriptors[rd_texture])) {
Vector<RD::Uniform> uniforms;
RD::Uniform u;
u.type = RD::UNIFORM_TYPE_SAMPLER_WITH_TEXTURE;
u.binding = 0;
u.ids.push_back(copy_viewports_sampler);
u.ids.push_back(rd_texture);
uniforms.push_back(u);
RID uniform_set = RD::get_singleton()->uniform_set_create(uniforms, copy_viewports_rd_shader, 0);
render_target_descriptors[rd_texture] = uniform_set;
}
Size2 screen_size(RD::get_singleton()->screen_get_width(p_screen), RD::get_singleton()->screen_get_height(p_screen));
RD::get_singleton()->draw_list_bind_render_pipeline(draw_list, copy_viewports_rd_pipeline);
RD::get_singleton()->draw_list_bind_index_array(draw_list, copy_viewports_rd_array);
RD::get_singleton()->draw_list_bind_uniform_set(draw_list, render_target_descriptors[rd_texture], 0);
float push_constant[4] = {
p_render_targets[i].rect.position.x / screen_size.width,
p_render_targets[i].rect.position.y / screen_size.height,
p_render_targets[i].rect.size.width / screen_size.width,
p_render_targets[i].rect.size.height / screen_size.height,
};
RD::get_singleton()->draw_list_set_push_constant(draw_list, push_constant, 4 * sizeof(float));
RD::get_singleton()->draw_list_draw(draw_list, true);
}
RD::get_singleton()->draw_list_end();
}
void RasterizerRD::begin_frame(double frame_step) {
time += frame_step;
canvas->set_time(time);
}
void RasterizerRD::end_frame(bool p_swap_buffers) {
RD::get_singleton()->finalize_frame();
#ifndef _MSC_VER
#warning not swapping buffers likely not an option for now, find another way
#endif
OS::get_singleton()->swap_buffers(); //probably should pass some bool to avoid display?
RD::get_singleton()->advance_frame(); //advance frame here, so any new call happens on new frame
}
void RasterizerRD::initialize() {
{ //create framebuffer copy shader
RenderingDevice::ShaderStageData vert;
vert.shader_stage = RenderingDevice::SHADER_STAGE_VERTEX;
vert.spir_v = RenderingDevice::get_singleton()->shader_compile_from_source(RenderingDevice::SHADER_STAGE_VERTEX,
"#version 450\n"
"layout(push_constant, binding = 0, std140) uniform Pos { vec4 dst_rect; } pos;\n"
"layout(location =0) out vec2 uv;\n"
"void main() { \n"
" vec2 base_arr[4] = vec2[](vec2(0.0,0.0),vec2(0.0,1.0),vec2(1.0,1.0),vec2(1.0,0.0));\n"
" uv = base_arr[gl_VertexIndex];\n"
" vec2 vtx = pos.dst_rect.xy+uv*pos.dst_rect.zw;\n"
" gl_Position = vec4(vtx * 2.0 - 1.0,0.0,1.0);\n"
"}\n");
RenderingDevice::ShaderStageData frag;
frag.shader_stage = RenderingDevice::SHADER_STAGE_FRAGMENT;
frag.spir_v =RenderingDevice::get_singleton()->shader_compile_from_source(RenderingDevice::SHADER_STAGE_FRAGMENT,
"#version 450\n"
"layout (location = 0) in vec2 uv;\n"
"layout (location = 0) out vec4 color;\n"
"layout (binding = 0) uniform sampler2D src_rt;\n"
"void main() { color=texture(src_rt,uv); }\n");
Vector<RenderingDevice::ShaderStageData> source;
source.push_back(vert);
source.push_back(frag);
String error;
copy_viewports_rd_shader = RD::get_singleton()->shader_create(source);
if (!copy_viewports_rd_shader.is_valid()) {
print_line("failed compilation: " + error);
} else {
print_line("compilation success");
}
}
{ //create index array for copy shader
PoolVector<uint8_t> pv;
pv.resize(6 * 4);
{
PoolVector<uint8_t>::Write w = pv.write();
int *p32 = (int *)w.ptr();
p32[0] = 0;
p32[1] = 1;
p32[2] = 2;
p32[3] = 0;
p32[4] = 2;
p32[5] = 3;
}
copy_viewports_rd_index_buffer = RD::get_singleton()->index_buffer_create(6, RenderingDevice::INDEX_BUFFER_FORMAT_UINT32, pv);
copy_viewports_rd_array = RD::get_singleton()->index_array_create(copy_viewports_rd_index_buffer, 0, 6);
}
{ //pipeline
copy_viewports_rd_pipeline = RD::get_singleton()->render_pipeline_create(copy_viewports_rd_shader, RD::get_singleton()->screen_get_framebuffer_format(), RD::INVALID_ID, RD::RENDER_PRIMITIVE_TRIANGLES, RD::PipelineRasterizationState(), RD::PipelineMultisampleState(), RD::PipelineDepthStencilState(), RenderingDevice::PipelineColorBlendState::create_disabled(), 0);
}
{ // sampler
copy_viewports_sampler = RD::get_singleton()->sampler_create(RD::SamplerState());
}
}
void RasterizerRD::finalize() {
memdelete(scene);
memdelete(canvas);
memdelete(storage);
//only need to erase these, the rest are erased by cascade
RD::get_singleton()->free(copy_viewports_rd_index_buffer);
RD::get_singleton()->free(copy_viewports_rd_shader);
RD::get_singleton()->free(copy_viewports_sampler);
}
RasterizerRD::RasterizerRD() {
time = 0;
storage = memnew(RasterizerStorageRD);
canvas = memnew(RasterizerCanvasRD(storage));
scene = memnew(RasterizerSceneForwardRD);
}
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