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Move framebuffer setup mapping to renderer gl

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This commit is contained in:
omigamedev
2026-06-02 06:35:07 +02:00
parent 43e3a74c42
commit e00eec30d4
6 changed files with 202 additions and 54 deletions
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146
src/rtt.cpp
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@@ -7,6 +7,45 @@
#include <cstdint>
namespace {
[[nodiscard]] GLenum texture_2d_target() noexcept
{
return static_cast<GLenum>(pp::renderer::gl::texture_2d_target());
}
[[nodiscard]] GLenum renderbuffer_target() noexcept
{
return static_cast<GLenum>(pp::renderer::gl::renderbuffer_target());
}
[[nodiscard]] GLenum framebuffer_target() noexcept
{
return static_cast<GLenum>(pp::renderer::gl::framebuffer_target());
}
[[nodiscard]] GLenum draw_framebuffer_target() noexcept
{
return static_cast<GLenum>(pp::renderer::gl::draw_framebuffer_target());
}
[[nodiscard]] GLenum read_framebuffer_target() noexcept
{
return static_cast<GLenum>(pp::renderer::gl::read_framebuffer_target());
}
[[nodiscard]] GLenum draw_framebuffer_binding_query() noexcept
{
return static_cast<GLenum>(pp::renderer::gl::draw_framebuffer_binding_query());
}
[[nodiscard]] GLenum read_framebuffer_binding_query() noexcept
{
return static_cast<GLenum>(pp::renderer::gl::read_framebuffer_binding_query());
}
}
RTT& RTT::operator=(RTT&& other)
{
int_fmt = other.int_fmt;
@@ -73,8 +112,8 @@ bool RTT::resize(int width, int height)
App::I->render_task([&]
{
glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &oldDFboID);
glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, &oldRFboID);
glGetIntegerv(draw_framebuffer_binding_query(), &oldDFboID);
glGetIntegerv(read_framebuffer_binding_query(), &oldRFboID);
ret = new_rtt.create(width, height, -1, int_fmt, rboID != 0);
if (!ret)
@@ -83,8 +122,8 @@ bool RTT::resize(int width, int height)
return;
}
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, new_rtt.fboID);
glBindFramebuffer(GL_READ_FRAMEBUFFER, fboID);
glBindFramebuffer(draw_framebuffer_target(), new_rtt.fboID);
glBindFramebuffer(read_framebuffer_target(), fboID);
glBlitFramebuffer(
0,
0,
@@ -97,8 +136,8 @@ bool RTT::resize(int width, int height)
static_cast<GLbitfield>(pp::renderer::gl::framebuffer_color_buffer_mask()),
static_cast<GLenum>(pp::renderer::gl::framebuffer_blit_filter(true)));
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, oldDFboID);
glBindFramebuffer(GL_READ_FRAMEBUFFER, oldRFboID);
glBindFramebuffer(draw_framebuffer_target(), oldDFboID);
glBindFramebuffer(read_framebuffer_target(), oldRFboID);
destroy();
});
@@ -151,17 +190,17 @@ void RTT::copy(const RTT & source)
{
GLint old_draw = 0;
GLint old_read = 0;
glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &old_draw);
glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, &old_read);
glGetIntegerv(draw_framebuffer_binding_query(), &old_draw);
glGetIntegerv(read_framebuffer_binding_query(), &old_read);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fboID);
glBindFramebuffer(GL_READ_FRAMEBUFFER, source.fboID);
glBindFramebuffer(draw_framebuffer_target(), fboID);
glBindFramebuffer(read_framebuffer_target(), source.fboID);
glBlitFramebuffer(0, 0, source.w, source.h, 0, 0, w, h,
static_cast<GLbitfield>(pp::renderer::gl::framebuffer_color_buffer_mask()),
static_cast<GLenum>(pp::renderer::gl::framebuffer_blit_filter(true)));
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, old_draw);
glBindFramebuffer(GL_READ_FRAMEBUFFER, old_read);
glBindFramebuffer(draw_framebuffer_target(), old_draw);
glBindFramebuffer(read_framebuffer_target(), old_read);
});
}
@@ -175,17 +214,17 @@ void RTT::copy(const RTT& source, const glm::vec4& rect)
GLint old_draw = 0;
GLint old_read = 0;
glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &old_draw);
glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, &old_read);
glGetIntegerv(draw_framebuffer_binding_query(), &old_draw);
glGetIntegerv(read_framebuffer_binding_query(), &old_read);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fboID);
glBindFramebuffer(GL_READ_FRAMEBUFFER, source.fboID);
glBindFramebuffer(draw_framebuffer_target(), fboID);
glBindFramebuffer(read_framebuffer_target(), source.fboID);
glBlitFramebuffer(r.x, r.y, r.z, r.w, r.x, r.y, r.z, r.w,
static_cast<GLbitfield>(pp::renderer::gl::framebuffer_color_buffer_mask()),
static_cast<GLenum>(pp::renderer::gl::framebuffer_blit_filter(false)));
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, old_draw);
glBindFramebuffer(GL_READ_FRAMEBUFFER, old_read);
glBindFramebuffer(draw_framebuffer_target(), old_draw);
glBindFramebuffer(read_framebuffer_target(), old_read);
});
}
@@ -222,56 +261,69 @@ bool RTT::create(int width, int height, int tex/* = -1*/, GLint internal_format,
const auto ifmt = static_cast<GLenum>(
pp::renderer::gl::texture_upload_type_for_internal_format(static_cast<std::uint32_t>(internal_format)));
glBindTexture(GL_TEXTURE_2D, texID);
glBindTexture(texture_2d_target(), texID);
if (tex == -1)
glTexImage2D(GL_TEXTURE_2D, 0, internal_format, width, height, 0, GL_RGBA, ifmt, 0);
glTexImage2D(texture_2d_target(), 0, internal_format, width, height, 0, GL_RGBA, ifmt, 0);
for (const auto parameter : pp::renderer::gl::default_render_target_texture_parameters())
{
glTexParameterf(
GL_TEXTURE_2D,
texture_2d_target(),
static_cast<GLenum>(parameter.name),
static_cast<GLfloat>(parameter.value));
}
glBindTexture(GL_TEXTURE_2D, 0);
glBindTexture(texture_2d_target(), 0);
// Create a renderbuffer object to store depth info
if (depth_buffer)
{
glGenRenderbuffers(1, &rboID);
glBindRenderbuffer(GL_RENDERBUFFER, rboID);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, width, height);
glBindRenderbuffer(GL_RENDERBUFFER, 0);
glBindRenderbuffer(renderbuffer_target(), rboID);
glRenderbufferStorage(
renderbuffer_target(),
static_cast<GLenum>(pp::renderer::gl::depth_component24_format()),
width,
height);
glBindRenderbuffer(renderbuffer_target(), 0);
}
GLint oldFboID;
glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &oldFboID);
glGetIntegerv(draw_framebuffer_binding_query(), &oldFboID);
// Create a framebuffer object
glGenFramebuffers(1, &fboID);
glBindFramebuffer(GL_FRAMEBUFFER, fboID);
glBindFramebuffer(framebuffer_target(), fboID);
//LOG("RTT CREATE %d - tex %d", fboID, texID);
// Attach the texture to FBO color attachment point
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texID, 0);
glFramebufferTexture2D(
framebuffer_target(),
static_cast<GLenum>(pp::renderer::gl::framebuffer_color_attachment()),
texture_2d_target(),
texID,
0);
if (depth_buffer)
{
// Attach the renderbuffer to depth attachment point
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rboID);
glFramebufferRenderbuffer(
framebuffer_target(),
static_cast<GLenum>(pp::renderer::gl::framebuffer_depth_attachment()),
renderbuffer_target(),
rboID);
}
// Check FBO status
status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (status != GL_FRAMEBUFFER_COMPLETE)
status = glCheckFramebufferStatus(framebuffer_target());
if (status != static_cast<GLenum>(pp::renderer::gl::framebuffer_complete_status()))
LOG("RTT::create failed because: %s",
pp::renderer::gl::framebuffer_status_name(static_cast<std::uint32_t>(status)));
// Switch back to window-system-provided framebuffer
glBindFramebuffer(GL_FRAMEBUFFER, oldFboID);
glBindFramebuffer(framebuffer_target(), oldFboID);
oldRFboID = 0;
oldDFboID = 0;
});
return status == GL_FRAMEBUFFER_COMPLETE;
return status == static_cast<GLenum>(pp::renderer::gl::framebuffer_complete_status());
}
void RTT::bindFramebuffer()
@@ -286,10 +338,10 @@ void RTT::bindFramebuffer()
#endif
}
#endif // _DEBUG
glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &oldDFboID);
glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, &oldRFboID);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fboID);
glBindFramebuffer(GL_READ_FRAMEBUFFER, fboID);
glGetIntegerv(draw_framebuffer_binding_query(), &oldDFboID);
glGetIntegerv(read_framebuffer_binding_query(), &oldRFboID);
glBindFramebuffer(draw_framebuffer_target(), fboID);
glBindFramebuffer(read_framebuffer_target(), fboID);
bound = true;
}
@@ -298,8 +350,8 @@ void RTT::unbindFramebuffer()
assert(App::I->is_render_thread());
if (!bound)
return;
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, oldDFboID);
glBindFramebuffer(GL_READ_FRAMEBUFFER, oldRFboID);
glBindFramebuffer(draw_framebuffer_target(), oldDFboID);
glBindFramebuffer(read_framebuffer_target(), oldRFboID);
oldRFboID = 0;
oldDFboID = 0;
bound = false;
@@ -360,8 +412,8 @@ uint8_t* RTT::readTextureData(uint8_t* buffer) const noexcept
{
const auto readback = pp::renderer::gl::rgba8_readback_format();
GLint old;
glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, &old);
glBindFramebuffer(GL_READ_FRAMEBUFFER, fboID);
glGetIntegerv(read_framebuffer_binding_query(), &old);
glBindFramebuffer(read_framebuffer_target(), fboID);
glReadPixels(
0,
0,
@@ -370,7 +422,7 @@ uint8_t* RTT::readTextureData(uint8_t* buffer) const noexcept
static_cast<GLenum>(readback.pixel_format),
static_cast<GLenum>(readback.component_type),
buffer);
glBindFramebuffer(GL_READ_FRAMEBUFFER, old);
glBindFramebuffer(read_framebuffer_target(), old);
});
return buffer;
}
@@ -385,8 +437,8 @@ float* RTT::readTextureDataFloat(float* buffer) const noexcept
{
const auto readback = pp::renderer::gl::rgba32f_readback_format();
GLint old;
glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, &old);
glBindFramebuffer(GL_READ_FRAMEBUFFER, fboID);
glGetIntegerv(read_framebuffer_binding_query(), &old);
glBindFramebuffer(read_framebuffer_target(), fboID);
glReadPixels(
0,
0,
@@ -395,7 +447,7 @@ float* RTT::readTextureDataFloat(float* buffer) const noexcept
static_cast<GLenum>(readback.pixel_format),
static_cast<GLenum>(readback.component_type),
buffer);
glBindFramebuffer(GL_READ_FRAMEBUFFER, old);
glBindFramebuffer(read_framebuffer_target(), old);
});
return buffer;
}
@@ -422,13 +474,13 @@ float * RTT::createBufferFloat() const noexcept
void RTT::bindTexture()
{
assert(App::I->is_render_thread());
glBindTexture(GL_TEXTURE_2D, texID);
glBindTexture(texture_2d_target(), texID);
}
void RTT::unbindTexture()
{
assert(App::I->is_render_thread());
glBindTexture(GL_TEXTURE_2D, 0);
glBindTexture(texture_2d_target(), 0);
}
Image RTT::get_image() const noexcept