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OpenGL example: uses offsetof() macros for vertice definition instead of hardcoded offsets

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ocornut 2014-11-15 13:10:15 +00:00
parent 36e52167da
commit 616668dac3
1 changed files with 3 additions and 3 deletions
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6
examples/opengl_example/main.cpp
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@ -64,9 +64,9 @@ static void ImImpl_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_c
{ {
const ImDrawList* cmd_list = cmd_lists[n]; const ImDrawList* cmd_list = cmd_lists[n];
const unsigned char* vtx_buffer = (const unsigned char*)cmd_list->vtx_buffer.begin(); const unsigned char* vtx_buffer = (const unsigned char*)cmd_list->vtx_buffer.begin();
glVertexPointer(2, GL_FLOAT, sizeof(ImDrawVert), (void*)(vtx_buffer)); glVertexPointer(2, GL_FLOAT, sizeof(ImDrawVert), (void*)(vtx_buffer + offsetof(ImDrawVert, pos)));
glTexCoordPointer(2, GL_FLOAT, sizeof(ImDrawVert), (void*)(vtx_buffer+8)); glTexCoordPointer(2, GL_FLOAT, sizeof(ImDrawVert), (void*)(vtx_buffer + offsetof(ImDrawVert, uv)));
glColorPointer(4, GL_UNSIGNED_BYTE, sizeof(ImDrawVert), (void*)(vtx_buffer+16)); glColorPointer(4, GL_UNSIGNED_BYTE, sizeof(ImDrawVert), (void*)(vtx_buffer + offsetof(ImDrawVert, col)));
int vtx_offset = 0; int vtx_offset = 0;
const ImDrawCmd* pcmd_end = cmd_list->commands.end(); const ImDrawCmd* pcmd_end = cmd_list->commands.end();