diff options
author | Enrico Turri <enricoturri@seznam.cz> | 2019-10-29 16:45:15 +0300 |
---|---|---|
committer | Enrico Turri <enricoturri@seznam.cz> | 2019-10-29 16:45:15 +0300 |
commit | a7b4b232e95bbe2751631dcf2ef1bd192c4a18cf (patch) | |
tree | 2b3f921058e5217011278b303393d5a588ad5292 /src | |
parent | 3ff3eed2b1e0751e823559542975e63d51f62010 (diff) |
ENABLE_THUMBNAIL_GENERATOR -> Use multisampling when generating thumbnail using off-screen framebuffer
Diffstat (limited to 'src')
-rw-r--r-- | src/slic3r/GUI/GLCanvas3D.cpp | 152 |
1 files changed, 114 insertions, 38 deletions
diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp index b40a83682..ae2f4989f 100644 --- a/src/slic3r/GUI/GLCanvas3D.cpp +++ b/src/slic3r/GUI/GLCanvas3D.cpp @@ -3567,6 +3567,29 @@ void GLCanvas3D::_render_undo_redo_stack(const bool is_undo, float pos_x) } #if ENABLE_THUMBNAIL_GENERATOR +#define ENABLE_THUMBNAIL_GENERATOR_DEBUG_OUTPUT 0 +#if ENABLE_THUMBNAIL_GENERATOR_DEBUG_OUTPUT +static void debug_output_thumbnail(const ThumbnailData& thumbnail_data) +{ + // debug export of generated image + wxImage image(thumbnail_data.width, thumbnail_data.height); + image.InitAlpha(); + + for (unsigned int r = 0; r < thumbnail_data.height; ++r) + { + unsigned int rr = (thumbnail_data.height - 1 - r) * thumbnail_data.width; + for (unsigned int c = 0; c < thumbnail_data.width; ++c) + { + unsigned char* px = (unsigned char*)thumbnail_data.pixels.data() + 4 * (rr + c); + image.SetRGB((int)c, (int)r, px[0], px[1], px[2]); + image.SetAlpha((int)c, (int)r, px[3]); + } + } + + image.SaveFile("C:/prusa/test/test.png", wxBITMAP_TYPE_PNG); +} +#endif // ENABLE_THUMBNAIL_GENERATOR_DEBUG_OUTPUT + static void render_volumes_in_thumbnail(const GLVolumePtrs& volumes, ThumbnailData& thumbnail_data, bool printable_only, bool parts_only) { auto is_visible = [](const GLVolume& v) -> bool @@ -3617,26 +3640,6 @@ static void render_volumes_in_thumbnail(const GLVolumePtrs& volumes, ThumbnailDa glsafe(::glDisable(GL_DEPTH_TEST)); glsafe(::glDisable(GL_LIGHTING)); - glsafe(::glReadPixels(0, 0, thumbnail_data.width, thumbnail_data.height, GL_RGBA, GL_UNSIGNED_BYTE, (void*)thumbnail_data.pixels.data())); - -#if 0 - // debug export of generated image - wxImage image(thumbnail_data.width, thumbnail_data.height); - image.InitAlpha(); - - for (unsigned int r = 0; r < thumbnail_data.height; ++r) - { - unsigned int rr = (thumbnail_data.height - 1 - r) * thumbnail_data.width; - for (unsigned int c = 0; c < thumbnail_data.width; ++c) - { - unsigned char* px = thumbnail_data.pixels.data() + 4 * (rr + c); - image.SetRGB((int)c, (int)r, px[0], px[1], px[2]); - image.SetAlpha((int)c, (int)r, px[3]); - } - } - - image.SaveFile("C:/prusa/test/test.png", wxBITMAP_TYPE_PNG); -#endif } void GLCanvas3D::_render_thumbnail_framebuffer(ThumbnailData& thumbnail_data, unsigned int w, unsigned int h, bool printable_only, bool parts_only) @@ -3645,34 +3648,102 @@ void GLCanvas3D::_render_thumbnail_framebuffer(ThumbnailData& thumbnail_data, un if (!thumbnail_data.is_valid()) return; - GLuint fbo; - glsafe(::glGenFramebuffers(1, &fbo)); - glsafe(::glBindFramebuffer(GL_FRAMEBUFFER, fbo)); + bool multisample = m_multisample_allowed; + if (multisample) + glsafe(::glEnable(GL_MULTISAMPLE)); - GLuint tex; - glsafe(::glGenTextures(1, &tex)); - glsafe(::glBindTexture(GL_TEXTURE_2D, tex)); - glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr)); - glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)); - glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)); - glsafe(::glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tex, 0)); + GLint max_samples; + glsafe(::glGetIntegerv(GL_MAX_SAMPLES, &max_samples)); + GLsizei num_samples = max_samples / 2; - GLuint depth; - glsafe(::glGenRenderbuffers(1, &depth)); - glsafe(::glBindRenderbuffer(GL_RENDERBUFFER, depth)); - glsafe(::glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, w, h)); - glsafe(::glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, depth)); + GLuint render_fbo; + glsafe(::glGenFramebuffers(1, &render_fbo)); + glsafe(::glBindFramebuffer(GL_FRAMEBUFFER, render_fbo)); + + GLuint render_tex = 0; + GLuint render_tex_buffer = 0; + if (multisample) + { + // use renderbuffer instead of texture to avoid the need to use glTexImage2DMultisample which is available only since OpenGL 3.2 + glsafe(::glGenRenderbuffers(1, &render_tex_buffer)); + glsafe(::glBindRenderbuffer(GL_RENDERBUFFER, render_tex_buffer)); + glsafe(::glRenderbufferStorageMultisample(GL_RENDERBUFFER, num_samples, GL_RGBA8, w, h)); + glsafe(::glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, render_tex_buffer)); + } + else + { + glsafe(::glGenTextures(1, &render_tex)); + glsafe(::glBindTexture(GL_TEXTURE_2D, render_tex)); + glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr)); + glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)); + glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)); + glsafe(::glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, render_tex, 0)); + } + + GLuint render_depth; + glsafe(::glGenRenderbuffers(1, &render_depth)); + glsafe(::glBindRenderbuffer(GL_RENDERBUFFER, render_depth)); + if (multisample) + glsafe(::glRenderbufferStorageMultisample(GL_RENDERBUFFER, num_samples, GL_DEPTH_COMPONENT24, w, h)); + else + glsafe(::glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, w, h)); + + glsafe(::glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, render_depth)); GLenum drawBufs[] = { GL_COLOR_ATTACHMENT0 }; glsafe(::glDrawBuffers(1, drawBufs)); if (::glCheckFramebufferStatus(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE) + { render_volumes_in_thumbnail(m_volumes.volumes, thumbnail_data, printable_only, parts_only); + if (multisample) + { + GLuint resolve_fbo; + glsafe(::glGenFramebuffers(1, &resolve_fbo)); + glsafe(::glBindFramebuffer(GL_FRAMEBUFFER, resolve_fbo)); + + GLuint resolve_tex; + glsafe(::glGenTextures(1, &resolve_tex)); + glsafe(::glBindTexture(GL_TEXTURE_2D, resolve_tex)); + glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr)); + glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)); + glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)); + glsafe(::glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, resolve_tex, 0)); + + glsafe(::glDrawBuffers(1, drawBufs)); + + if (::glCheckFramebufferStatus(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE) + { + glsafe(::glBindFramebuffer(GL_READ_FRAMEBUFFER, render_fbo)); + glsafe(::glBindFramebuffer(GL_DRAW_FRAMEBUFFER, resolve_fbo)); + glsafe(::glBlitFramebuffer(0, 0, w, h, 0, 0, w, h, GL_COLOR_BUFFER_BIT, GL_LINEAR)); + + glsafe(::glBindFramebuffer(GL_READ_FRAMEBUFFER, resolve_fbo)); + glsafe(::glReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, (void*)thumbnail_data.pixels.data())); + } + + glsafe(::glDeleteTextures(1, &resolve_tex)); + glsafe(::glDeleteFramebuffers(1, &resolve_fbo)); + } + else + glsafe(::glReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, (void*)thumbnail_data.pixels.data())); + +#if ENABLE_THUMBNAIL_GENERATOR_DEBUG_OUTPUT + debug_output_thumbnail(thumbnail_data); +#endif // ENABLE_THUMBNAIL_GENERATOR_DEBUG_OUTPUT + } + glsafe(::glBindFramebuffer(GL_FRAMEBUFFER, 0)); - glsafe(::glDeleteRenderbuffers(1, &depth)); - glsafe(::glDeleteTextures(1, &tex)); - glsafe(::glDeleteFramebuffers(1, &fbo)); + glsafe(::glDeleteRenderbuffers(1, &render_depth)); + if (render_tex_buffer != 0) + glsafe(::glDeleteRenderbuffers(1, &render_tex_buffer)); + if (render_tex != 0) + glsafe(::glDeleteTextures(1, &render_tex)); + glsafe(::glDeleteFramebuffers(1, &render_fbo)); + + if (multisample) + glsafe(::glDisable(GL_MULTISAMPLE)); } void GLCanvas3D::_render_thumbnail_legacy(ThumbnailData& thumbnail_data, unsigned int w, unsigned int h, bool printable_only, bool parts_only) @@ -3694,6 +3765,11 @@ void GLCanvas3D::_render_thumbnail_legacy(ThumbnailData& thumbnail_data, unsigne render_volumes_in_thumbnail(m_volumes.volumes, thumbnail_data, printable_only, parts_only); + glsafe(::glReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, (void*)thumbnail_data.pixels.data())); +#if ENABLE_THUMBNAIL_GENERATOR_DEBUG_OUTPUT + debug_output_thumbnail(thumbnail_data); +#endif // ENABLE_THUMBNAIL_GENERATOR_DEBUG_OUTPUT + // restore the default framebuffer size to avoid flickering on the 3D scene m_camera.apply_viewport(0, 0, cnv_size.get_width(), cnv_size.get_height()); } |