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Applied changes to submit texture references to dear imgui

simple_math_single_header
Martin Felis 2018-12-15 14:12:06 +01:00
parent 60acd12d94
commit e1f5b0fa0f
2 changed files with 53 additions and 4 deletions
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47
3rdparty/imgui/examples/imgui_impl_opengl3.cpp vendored
View File

@ -244,6 +244,36 @@ void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, (GLsizeiptr)cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx), (const GLvoid*)cmd_list->IdxBuffer.Data, GL_STREAM_DRAW);
for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
{
const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
if (pcmd->UserCallback)
{
pcmd->UserCallback(cmd_list, pcmd);
}
else
{
intptr_t ptr = (intptr_t)pcmd->TextureId;
// MOD START (martin), 2018-03-09: support texture references that point to an address of a texture id
if (ptr > 1024 * 1024)
{
GLTextureRef* texture_ref = (GLTextureRef*)pcmd->TextureId;
GLuint* texture_ptr = (GLuint*) texture_ref->mTextureIdPtr;
glBindTexture(GL_TEXTURE_2D, *texture_ptr);
} else {
glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId);
}
// MOD END (martin), 2018-03-09: support texture references that point to an address of a texture id
glScissor((int)pcmd->ClipRect.x, (int)(fb_height - pcmd->ClipRect.w), (int)(pcmd->ClipRect.z - pcmd->ClipRect.x), (int)(pcmd->ClipRect.w - pcmd->ClipRect.y));
glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer_offset);
}
idx_buffer_offset += pcmd->ElemCount;
}
for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
{
const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
@ -262,10 +292,19 @@ void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
glScissor((int)clip_rect.x, (int)(fb_height - clip_rect.w), (int)(clip_rect.z - clip_rect.x), (int)(clip_rect.w - clip_rect.y));
else
glScissor((int)clip_rect.x, (int)clip_rect.y, (int)clip_rect.z, (int)clip_rect.w); // Support for GL 4.5's glClipControl(GL_UPPER_LEFT)
// Bind texture, Draw
glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId);
glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer_offset);
// MOD START (martin), 2018-03-09: support texture references that point to an address of a texture id
intptr_t ptr = (intptr_t)pcmd->TextureId;
if (ptr > 1024 * 1024)
{
GLTextureRef* texture_ref = (GLTextureRef*)pcmd->TextureId;
GLuint* texture_ptr = (GLuint*) texture_ref->mTextureIdPtr;
glBindTexture(GL_TEXTURE_2D, *texture_ptr);
} else {
glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId);
}
// MOD END (martin), 2018-03-09: support texture references that point to an address of a texture id
glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer_offset);
}
}
idx_buffer_offset += pcmd->ElemCount;

10
3rdparty/imgui/examples/imgui_impl_opengl3.h vendored
View File

@ -30,6 +30,16 @@
#define IMGUI_IMPL_OPENGL_LOADER_GL3W
#endif
// MOD START (martin), 2018-03-09: support texture references that point to an address of a texture id
union GLTextureRef {
int mTextureId;
struct {
int magic;
unsigned int* mTextureIdPtr;
};
};
// MOD END (martin), 2018-03-09: support texture references that point to an address of a texture id
IMGUI_IMPL_API bool ImGui_ImplOpenGL3_Init(const char* glsl_version = NULL);
IMGUI_IMPL_API void ImGui_ImplOpenGL3_Shutdown();
IMGUI_IMPL_API void ImGui_ImplOpenGL3_NewFrame();