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Refactoring in ImGuiWrapper::render_draw_data()

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This commit is contained in:
enricoturri1966 2022-03-14 13:34:08 +01:00
parent f0bad14748
commit 2ab8469cb6
1 changed files with 20 additions and 26 deletions
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46
src/slic3r/GUI/ImGuiWrapper.cpp
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@ -1458,7 +1458,7 @@ void ImGuiWrapper::render_draw_data(ImDrawData *draw_data)
// Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
ImGuiIO& io = ImGui::GetIO();
const int fb_width = (int)(draw_data->DisplaySize.x * io.DisplayFramebufferScale.x);
const int fb_width = (int)(draw_data->DisplaySize.x * io.DisplayFramebufferScale.x);
const int fb_height = (int)(draw_data->DisplaySize.y * io.DisplayFramebufferScale.y);
if (fb_width == 0 || fb_height == 0)
return;
@ -1469,9 +1469,9 @@ void ImGuiWrapper::render_draw_data(ImDrawData *draw_data)
curr_shader->stop_using();
shader->start_using();
#endif // ENABLE_GL_IMGUI_SHADERS
#else
draw_data->ScaleClipRects(io.DisplayFramebufferScale);
#endif // ENABLE_GL_IMGUI_SHADERS
// We are using the OpenGL fixed pipeline to make the example code simpler to read!
// Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, vertex/texcoord/color pointers, polygon fill.
@ -1479,15 +1479,16 @@ void ImGuiWrapper::render_draw_data(ImDrawData *draw_data)
GLint last_polygon_mode[2]; glsafe(::glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode));
GLint last_viewport[4]; glsafe(::glGetIntegerv(GL_VIEWPORT, last_viewport));
GLint last_scissor_box[4]; glsafe(::glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box));
GLint last_texture_env_mode; glsafe(::glGetTexEnviv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, &last_texture_env_mode));
glsafe(::glPushAttrib(GL_ENABLE_BIT | GL_COLOR_BUFFER_BIT | GL_TRANSFORM_BIT));
glsafe(::glEnable(GL_BLEND));
glsafe(::glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA));
glsafe(::glDisable(GL_CULL_FACE));
glsafe(::glDisable(GL_DEPTH_TEST));
glsafe(::glDisable(GL_LIGHTING));
glsafe(::glDisable(GL_COLOR_MATERIAL));
glsafe(::glEnable(GL_SCISSOR_TEST));
#if !ENABLE_GL_IMGUI_SHADERS
glsafe(::glDisable(GL_LIGHTING));
glsafe(::glDisable(GL_COLOR_MATERIAL));
glsafe(::glEnableClientState(GL_VERTEX_ARRAY));
glsafe(::glEnableClientState(GL_TEXTURE_COORD_ARRAY));
glsafe(::glEnableClientState(GL_COLOR_ARRAY));
@ -1495,9 +1496,6 @@ void ImGuiWrapper::render_draw_data(ImDrawData *draw_data)
glsafe(::glEnable(GL_TEXTURE_2D));
glsafe(::glPolygonMode(GL_FRONT_AND_BACK, GL_FILL));
glsafe(::glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE));
GLint texture_env_mode = GL_MODULATE;
glsafe(::glGetTexEnviv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, &texture_env_mode));
glsafe(::glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE));
#if ENABLE_GL_IMGUI_SHADERS
// Setup viewport, orthographic projection matrix
@ -1550,29 +1548,27 @@ void ImGuiWrapper::render_draw_data(ImDrawData *draw_data)
GLuint vbo_id;
glsafe(::glGenBuffers(1, &vbo_id));
glsafe(::glBindBuffer(GL_ARRAY_BUFFER, vbo_id));
glsafe(::glBufferData(GL_ARRAY_BUFFER, vtx_buffer_size, nullptr, GL_STREAM_DRAW));
glsafe(::glBufferSubData(GL_ARRAY_BUFFER, 0, vtx_buffer_size, (const GLvoid*)vtx_buffer));
glsafe(::glBufferData(GL_ARRAY_BUFFER, vtx_buffer_size, vtx_buffer, GL_STATIC_DRAW));
GLuint ibo_id;
glsafe(::glGenBuffers(1, &ibo_id));
glsafe(::glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo_id));
glsafe(::glBufferData(GL_ELEMENT_ARRAY_BUFFER, idx_buffer_size, nullptr, GL_STREAM_DRAW));
glsafe(::glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, idx_buffer_size, (const GLvoid*)idx_buffer));
glsafe(::glBufferData(GL_ELEMENT_ARRAY_BUFFER, idx_buffer_size, idx_buffer, GL_STATIC_DRAW));
const int position_id = shader->get_attrib_location("Position");
if (position_id != -1) {
glVertexAttribPointer(position_id, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, pos));
glEnableVertexAttribArray(position_id);
glsafe(::glVertexAttribPointer(position_id, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, pos)));
glsafe(::glEnableVertexAttribArray(position_id));
}
const int uv_id = shader->get_attrib_location("UV");
if (uv_id != -1) {
glVertexAttribPointer(uv_id, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, uv));
glEnableVertexAttribArray(uv_id);
glsafe(::glVertexAttribPointer(uv_id, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, uv)));
glsafe(::glEnableVertexAttribArray(uv_id));
}
const int color_id = shader->get_attrib_location("Color");
if (color_id != -1) {
glVertexAttribPointer(color_id, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, col));
glEnableVertexAttribArray(color_id);
glsafe(::glVertexAttribPointer(color_id, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, col)));
glsafe(::glEnableVertexAttribArray(color_id));
}
#else
glsafe(::glVertexPointer(2, GL_FLOAT, sizeof(ImDrawVert), (const GLvoid*)((const char*)vtx_buffer + IM_OFFSETOF(ImDrawVert, pos))));
@ -1594,7 +1590,7 @@ void ImGuiWrapper::render_draw_data(ImDrawData *draw_data)
continue;
// Apply scissor/clipping rectangle (Y is inverted in OpenGL)
glScissor((int)clip_min.x, (int)(fb_height - clip_max.y), (int)(clip_max.x - clip_min.x), (int)(clip_max.y - clip_min.y));
glsafe(::glScissor((int)clip_min.x, (int)(fb_height - clip_max.y), (int)(clip_max.x - clip_min.x), (int)(clip_max.y - clip_min.y)));
// Bind texture, Draw
glsafe(::glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->GetTexID()));
@ -1616,11 +1612,11 @@ void ImGuiWrapper::render_draw_data(ImDrawData *draw_data)
#if ENABLE_GL_IMGUI_SHADERS
if (position_id != -1)
glDisableVertexAttribArray(position_id);
glsafe(::glDisableVertexAttribArray(position_id));
if (uv_id != -1)
glDisableVertexAttribArray(uv_id);
glsafe(::glDisableVertexAttribArray(uv_id));
if (color_id != -1)
glDisableVertexAttribArray(color_id);
glsafe(::glDisableVertexAttribArray(color_id));
glsafe(::glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0));
glsafe(::glBindBuffer(GL_ARRAY_BUFFER, 0));
@ -1631,14 +1627,12 @@ void ImGuiWrapper::render_draw_data(ImDrawData *draw_data)
}
// Restore modified state
glsafe(::glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, texture_env_mode));
glsafe(::glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, last_texture_env_mode));
glsafe(::glBindTexture(GL_TEXTURE_2D, (GLuint)last_texture));
#if !ENABLE_GL_IMGUI_SHADERS
glsafe(::glDisableClientState(GL_COLOR_ARRAY));
glsafe(::glDisableClientState(GL_TEXTURE_COORD_ARRAY));
glsafe(::glDisableClientState(GL_VERTEX_ARRAY));
#endif // !ENABLE_GL_IMGUI_SHADERS
glsafe(::glBindTexture(GL_TEXTURE_2D, (GLuint)last_texture));
#if !ENABLE_GL_IMGUI_SHADERS
glsafe(::glMatrixMode(GL_MODELVIEW));
glsafe(::glPopMatrix());
glsafe(::glMatrixMode(GL_PROJECTION));