PulseStudio/VoxelEngine
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Cubemap class

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This commit is contained in:
MihailRis
2024-03-07 13:40:38 +03:00
parent 87edb1d45e
commit eefd327845
10 changed files with 105 additions and 41 deletions
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src/frontend/graphics/Skybox.cpp
+11 -18
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@@ -9,6 +9,7 @@
#include "../../graphics/Mesh.h"
#include "../../graphics/Batch3D.h"
#include "../../graphics/Texture.h"
#include "../../graphics/Cubemap.h"
#include "../../graphics/Framebuffer.h"
#include "../../window/Window.h"
#include "../../window/Camera.h"
@@ -25,20 +26,11 @@ Skybox::Skybox(uint size, Shader* shader)
shader(shader),
batch3d(std::make_unique<Batch3D>(4096))
{
glGenTextures(1, &cubemap);
glBindTexture(GL_TEXTURE_CUBE_MAP, cubemap);
glTexParameterf(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameterf(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameterf(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
for (uint face = 0; face < 6; face++) {
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, 0, GL_RGB, size, size, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
}
auto cubemap = std::make_unique<Cubemap>(size, size, ImageFormat::rgb888);
uint fboid;
glGenFramebuffers(1, &fboid);
fbo = std::make_unique<Framebuffer>(fboid, 0, (std::unique_ptr<Texture>)nullptr);
fbo = std::make_unique<Framebuffer>(fboid, 0, std::move(cubemap));
float vertices[] {
-1.0f, -1.0f, -1.0f, 1.0f, 1.0f, 1.0f,
@@ -63,7 +55,6 @@ Skybox::Skybox(uint size, Shader* shader)
}
Skybox::~Skybox() {
glDeleteTextures(1, &cubemap);
}
void Skybox::drawBackground(Camera* camera, Assets* assets, int width, int height) {
@@ -150,9 +141,11 @@ void Skybox::refresh(const GfxContext& pctx, float t, float mie, uint quality) {
ctx.setFramebuffer(fbo.get());
ctx.setViewport(Viewport(size, size));
auto cubemap = dynamic_cast<Cubemap*>(fbo->getTexture());
ready = true;
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_CUBE_MAP, cubemap);
cubemap->bind();
shader->use();
const glm::vec3 xaxs[] = {
@@ -190,24 +183,24 @@ void Skybox::refresh(const GfxContext& pctx, float t, float mie, uint quality) {
shader->uniform1f("u_fog", mie - 1.0f);
shader->uniform3f("u_lightDir", glm::normalize(glm::vec3(sin(t), -cos(t), 0.0f)));
for (uint face = 0; face < 6; face++) {
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, cubemap, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, cubemap->getId(), 0);
shader->uniform3f("u_xaxis", xaxs[face]);
shader->uniform3f("u_yaxis", yaxs[face]);
shader->uniform3f("u_zaxis", zaxs[face]);
mesh->draw(GL_TRIANGLES);
mesh->draw();
}
glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
cubemap->unbind();
glActiveTexture(GL_TEXTURE0);
}
void Skybox::bind() const {
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_CUBE_MAP, cubemap);
fbo->getTexture()->bind();
glActiveTexture(GL_TEXTURE0);
}
void Skybox::unbind() const {
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
fbo->getTexture()->unbind();
glActiveTexture(GL_TEXTURE0);
}