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Move to use the GPU API instead OpenGL #23

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Bogdan Nagirniak merged 9 commits from BLEN-371 into hydra-render 2023-04-07 13:28:49 +02:00
Conversation 0 Commits 9 Files Changed 4 +24 -43
1 changed files with 24 additions and 43 deletions
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67
source/blender/render/hydra/final_engine.cc
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@ -1,12 +1,10 @@
/* SPDX-License-Identifier: Apache-2.0
* Copyright 2011-2022 Blender Foundation */
#include <pxr/imaging/glf/drawTarget.h>
#include "BKE_lib_id.h"
#include "DEG_depsgraph_query.h"
#include "GPU_texture.h"
#include "GPU_framebuffer.h"
#include "GPU_texture.h"
#include "camera.h"
#include "final_engine.h"
@ -197,45 +195,21 @@ void FinalEngineGL::render(Depsgraph *depsgraph)
{"Combined", std::vector<float>(res[0] * res[1] * 4)}}; // 4 - number of channels
std::vector<float> &pixels = render_images["Combined"];
//GPUFrameBuffer *framebuffer = GPU_framebuffer_create("fbHydraRenderFinal");
//GPUTexture *texture = GPU_texture_create_2d("texHydraRenderViewport",
// res[0],
// res[1],
// 1,
// GPU_RGBA32F,
// GPU_TEXTURE_USAGE_GENERAL,
// nullptr);
//GPU_texture_filter_mode(texture, true);
//GPU_texture_wrap_mode(texture, true, true);
//GPU_framebuffer_texture_attach(framebuffer, texture, 0, 0);
GPUFrameBuffer *framebuffer = GPU_framebuffer_create("fbHydraRenderFinal");
GPUTexture *texture = GPU_texture_create_2d("texHydraRenderViewport",
res[0],
res[1],
1,
GPU_RGBA32F,
GPU_TEXTURE_USAGE_GENERAL,
nullptr);
GPU_texture_filter_mode(texture, true);
GPU_texture_wrap_mode(texture, true, true);
GPU_framebuffer_texture_attach(framebuffer, texture, 0, 0);
//GPU_framebuffer_bind(framebuffer);
GLuint framebuffer_name = 0;
glGenFramebuffers(1, &framebuffer_name);
glBindFramebuffer(GL_FRAMEBUFFER, framebuffer_name);
// The texture we're going to render to
GLuint rendered_texture;
glGenTextures(1, &rendered_texture);
// "Bind" the newly created texture : all future texture functions will modify this texture
glBindTexture(GL_TEXTURE_2D, rendered_texture);
// Give an empty image to OpenGL ( the last "0" )
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, res[0], res[1], 0, GL_RGBA, GL_FLOAT, 0);
// Poor filtering. Needed !
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
// Set "rendered_texture" as our colour attachement #0
glFramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, rendered_texture, 0);
// Generate vertex array
GLuint vao;
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
GPU_framebuffer_bind(framebuffer);
float clear_color[4] = {0.0, 0.0, 0.0, 0.0};
GPU_framebuffer_clear_color_depth(framebuffer, clear_color, 0.0);
{
// Release the GIL before calling into hydra, in case any hydra plugins call into python.
@ -262,12 +236,19 @@ void FinalEngineGL::render(Depsgraph *depsgraph)
break;
}
glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_FLOAT, pixels.data());
void *data = GPU_texture_read(texture, GPU_DATA_FLOAT, 0);
memcpy(pixels.data(), data, pixels.size() * sizeof(float));
MEM_freeN(data);
update_render_result(render_images, layer_name, res[0], res[1]);
}
glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_FLOAT, pixels.data());
void *data = GPU_texture_read(texture, GPU_DATA_FLOAT, 0);
memcpy(pixels.data(), data, pixels.size() * sizeof(float));
MEM_freeN(data);
update_render_result(render_images, layer_name, res[0], res[1]);
GPU_framebuffer_free(framebuffer);
GPU_texture_free(texture);
}
} // namespace blender::render::hydra