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feat: calculate correct (probably) UVs

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Matias 2025-07-14 20:18:35 +02:00
parent af189dc9b0
commit 168c43269e
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GPG Key ID: ED35A6AC65A06B69
1 changed files with 15 additions and 14 deletions
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29
src/main.cpp
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@ -97,9 +97,8 @@ class CRenderWobblyWindowPassElement final: public IPassElement {
g_pHyprOpenGL->useProgram(g_shader->program);
g_shader->setUniformMatrix3fv(SHADER_PROJ, 1, GL_TRUE, glMatrix.getMatrix());
// g_shader->setUniformFloat4(SHADER_COLOR, 1.f, 255.f, 1.f, 255.f);
g_shader->setUniformInt(SHADER_TEX, 0);
GLCALL(glBindVertexArray(g_VAO));
GLCALL(glBindBuffer(GL_ARRAY_BUFFER, g_VBO));
@ -108,22 +107,24 @@ class CRenderWobblyWindowPassElement final: public IPassElement {
Vector2D {windowBox.x + windowBox.width, windowBox.y + windowBox.height}
/ pWindowFB->m_size;
std::array<float, g_SUBDIVS * g_SUBDIVS * 3 * 2> UVs;
const unsigned int vertsPerRow = g_SUBDIVS + 1;
std::vector<float> UVs;
UVs.reserve(vertsPerRow * vertsPerRow * 2);
const auto step = (UVBottomRight - UVTopLeft) / (g_SUBDIVS - 1);
const auto step = (UVBottomRight - UVTopLeft) / (g_SUBDIVS);
std::generate(UVs.begin(), UVs.end(), [UVTopLeft, step, index = 0]() mutable {
int x = index % g_SUBDIVS;
int y = index / g_SUBDIVS;
const float u = UVTopLeft.x + x * step.x;
for (unsigned int y = 0; y < vertsPerRow; ++y) {
const float v = UVTopLeft.y + y * step.y;
index++;
return (index % 2 == 0) ? v : u;
});
for (unsigned int x = 0; x < vertsPerRow; ++x) {
const float u = UVTopLeft.x + x * step.x;
glBindBuffer(GL_ARRAY_BUFFER, g_VBO_UVs);
glBufferSubData(GL_ARRAY_BUFFER, 0, UVs.size(), UVs.data());
UVs.push_back(u);
UVs.push_back(v);
}
}
GLCALL(glBindBuffer(GL_ARRAY_BUFFER, g_VBO_UVs));
GLCALL(glBufferSubData(GL_ARRAY_BUFFER, 0, UVs.size() * sizeof(float), UVs.data()));
GLCALL(glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_EBO));
GLCALL(glDrawElements(GL_TRIANGLE_STRIP, g_indexCount, GL_UNSIGNED_INT, 0));