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Cleaned up some details with the buffer reset change. iPhoneOS no longer forces define of buffer reset, but it is now defined by default if no other one is.
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src/renderer_GLES_2.c
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src/renderer_GLES_2.c
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src/renderer_GLES_3.c
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src/renderer_GLES_3.c
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#define SDL_GPU_GLSL_VERSION 300
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#define SDL_GPU_USE_BUFFER_PIPELINE
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#ifdef __IPHONEOS__
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#define SDL_GPU_USE_BUFFER_RESET
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#endif
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#define SDL_GPU_SKIP_ENABLE_TEXTURE_2D
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#define SDL_GPU_ASSUME_SHADERS
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// TODO: Make this dynamic because GLES 3.1 supports it
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src/renderer_GL_common.inl
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src/renderer_GL_common.inl
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int gpu_strcasecmp(const char* s1, const char* s2);
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// Default to buffer reset VBO upload method
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#if defined(SDL_GPU_USE_BUFFER_PIPELINE) && !defined(SDL_GPU_USE_BUFFER_RESET) && !defined(SDL_GPU_USE_BUFFER_MAPPING) && !defined(SDL_GPU_USE_BUFFER_UPDATE)
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#define SDL_GPU_USE_BUFFER_RESET
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#endif
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// Forces a flush when vertex limit is reached (roughly 1000 sprites)
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#define GPU_BLIT_BUFFER_VERTICES_PER_SPRITE 4
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#define GPU_BLIT_BUFFER_INIT_MAX_NUM_VERTICES (GPU_BLIT_BUFFER_VERTICES_PER_SPRITE*1000)
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if(indices != NULL)
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glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, bytes_indices, indices);
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#else
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#error SDL_gpu's VBO upload needs to choose SDL_GPU_USE_BUFFER_RESET, SDL_GPU_USE_BUFFER_MAPPING, or SDL_GPU_USE_BUFFER_UPDATE and none is defined!
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#error "SDL_gpu's VBO upload needs to choose SDL_GPU_USE_BUFFER_RESET, SDL_GPU_USE_BUFFER_MAPPING, or SDL_GPU_USE_BUFFER_UPDATE and none is defined!"
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#endif
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#endif
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}