All tested games that use a single texture show no regression.
Only Texture2D textures are supported right now, each shader gets its own "tex_fs/vs/gs" sampler array to maintain independent textures between shader stages, the textures themselves are reused if possible.
This is how nouveau calculates the viewport width and height. For some reason some games set 0xFFFF in the VIEWPORT_HORIZ and VIEWPORT_VERT registers, maybe those are a misnomer and actually refer to something else?
This is based on research from nouveau. Many things are currently unknown and will require hwtests in the future.
This commit also stubs QueryMode::Write2 to do the same as Write. Nouveau code treats them interchangeably, it is currently unknown what the difference is.
The vertex arrays will be copied to the stream buffer one after the other, and the attributes will be set using the ARB_vertex_attrib_binding extension.
yuzu now thus requires OpenGL 4.3 or the ARB_vertex_attrib_binding extension.
The Ryujinx macro interpreter and envydis were used as reference.
Macros are programs that are uploaded by the games during boot and can later be called by writing to their method id in a GPU command buffer.
TODO: A shader may not use all of these textures at the same time, shader analysis should be performed to determine which textures are actually sampled.
This macro binds the SSBO Info Buffer as the current ConstBuffer.
This buffer is usually bound to c0 during shader execution.
Games seem to use this macro instead of directly writing the address for some reason.
Writing to this method will cause the written value to be stored in the currently-set ConstBuffer plus CB_POS.
This method is usually used to upload uniforms or other shader-visible data.
It'll now set the CB_SIZE, CB_ADDRESS and CB_BIND registers when it's called.
Presumably this SetShader function is binding the constant shader uniforms to buffer 1 (c1[]).
Register 0xE24 is actually a macro that sets some shader parameters in the register structure.
Macros are uploaded to the GPU at startup and have their own ISA, we'll probably write an interpreter for this in the future.
