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Anm2Ed 2.0

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shweet
2025-11-13 21:53:32 -05:00
parent bb6b68311b
commit 51bf4c2012
5 changed files with 43 additions and 55 deletions
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38
src/canvas.cpp
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@@ -89,11 +89,13 @@ namespace anm2ed
glBindVertexArray(0);
// Framebuffer
glGenTextures(1, &texture);
// Framebuffer(s)
glGenFramebuffers(1, &fbo);
glGenRenderbuffers(1, &rbo);
// Framebuffer(s) Texture
glGenTextures(1, &texture);
framebuffer_set();
}
@@ -267,39 +269,15 @@ namespace anm2ed
void Canvas::viewport_set() const { glViewport(0, 0, size.x, size.y); }
void Canvas::clear(const vec4& color) const
void Canvas::clear(vec4 color) const
{
glDisable(GL_BLEND);
glClearColor(color.r, color.g, color.b, color.a);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_BLEND);
}
void Canvas::bind() const
{
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
void Canvas::bind() const { glBindFramebuffer(GL_FRAMEBUFFER, fbo); }
GLboolean blendEnabled = glIsEnabled(GL_BLEND);
if (!blendEnabled) glEnable(GL_BLEND);
glGetIntegerv(GL_BLEND_SRC_RGB, &previousSrcRGB);
glGetIntegerv(GL_BLEND_DST_RGB, &previousDstRGB);
glGetIntegerv(GL_BLEND_SRC_ALPHA, &previousSrcAlpha);
glGetIntegerv(GL_BLEND_DST_ALPHA, &previousDstAlpha);
previousBlendStored = true;
glBlendFuncSeparate(GL_ONE, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
}
void Canvas::unbind() const
{
glBindFramebuffer(GL_FRAMEBUFFER, 0);
if (previousBlendStored)
{
glBlendFuncSeparate(previousSrcRGB, previousDstRGB, previousSrcAlpha, previousDstAlpha);
previousBlendStored = false;
}
}
void Canvas::unbind() const { glBindFramebuffer(GL_FRAMEBUFFER, 0); }
std::vector<unsigned char> Canvas::pixels_get() const
{
@@ -332,10 +310,8 @@ namespace anm2ed
{
uint8_t rgba[4]{};
glBindTexture(GL_READ_FRAMEBUFFER, fbo);
glPixelStorei(GL_PACK_ALIGNMENT, 1);
glReadPixels(position.x, framebufferSize.y - 1 - position.y, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, rgba);
glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
return vec4(math::uint8_to_float(rgba[0]), math::uint8_to_float(rgba[1]), math::uint8_to_float(rgba[2]),
math::uint8_to_float(rgba[3]));