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https://github.com/libretro/RetroArch.git
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347 lines
11 KiB
C
347 lines
11 KiB
C
/* originally from from https://github.com/smealum/ctrulib */
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/*
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gpu-old.c _ Legacy GPU commands.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <3ds/types.h>
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#include <3ds/gpu/gpu.h>
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#include <3ds/gpu/gx.h>
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#include <3ds/gpu/shbin.h>
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#include "gpu_old.h"
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void GPU_Init(Handle *gsphandle)
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{
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gpuCmdBuf = NULL;
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gpuCmdBufSize = 0;
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gpuCmdBufOffset = 0;
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}
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void GPU_Reset(u32* gxbuf, u32* gpuBuf, u32 gpuBufSize)
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{
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GPUCMD_SetBuffer(gpuBuf, gpuBufSize, 0);
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}
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void GPU_SetFloatUniform(GPU_SHADER_TYPE type,
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u32 startreg, u32* data, u32 numreg)
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{
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int regOffset = 0x0;;
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if (!data)
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return;
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if (type == GPU_GEOMETRY_SHADER)
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regOffset = (-0x30);
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GPUCMD_AddWrite(GPUREG_VSH_FLOATUNIFORM_CONFIG+regOffset,
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0x80000000 | startreg);
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GPUCMD_AddWrites(GPUREG_VSH_FLOATUNIFORM_DATA+regOffset, data, numreg*4);
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}
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/* takes PAs as arguments */
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void GPU_SetViewport(u32* depthBuffer, u32* colorBuffer,
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u32 x, u32 y, u32 w, u32 h)
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{
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u32 f116e;
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u32 param[0x4];
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float fw = (float)w;
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float fh = (float)h;
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GPUCMD_AddWrite(GPUREG_FRAMEBUFFER_FLUSH, 0x00000001);
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GPUCMD_AddWrite(GPUREG_FRAMEBUFFER_INVALIDATE, 0x00000001);
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f116e = 0x01000000 | (((h-1) & 0xFFF) << 12) | (w & 0xFFF);
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param[0x0] = ((u32)depthBuffer) >> 3;
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param[0x1] = ((u32)colorBuffer) >> 3;
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param[0x2] = f116e;
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GPUCMD_AddIncrementalWrites(GPUREG_DEPTHBUFFER_LOC, param, 0x00000003);
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GPUCMD_AddWrite(GPUREG_RENDERBUF_DIM, f116e);
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/* depth buffer format */
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GPUCMD_AddWrite(GPUREG_DEPTHBUFFER_FORMAT, 0x00000003);
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/* color buffer format */
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GPUCMD_AddWrite(GPUREG_COLORBUFFER_FORMAT, 0x00000002);
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GPUCMD_AddWrite(GPUREG_FRAMEBUFFER_BLOCK32, 0x00000000); /* ? */
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param[0x0] = f32tof24(fw/2);
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param[0x1] = f32tof31(2.0f / fw) << 1;
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param[0x2] = f32tof24(fh/2);
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param[0x3] = f32tof31(2.0f / fh) << 1;
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GPUCMD_AddIncrementalWrites(GPUREG_VIEWPORT_WIDTH, param, 0x00000004);
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GPUCMD_AddWrite(GPUREG_VIEWPORT_XY, (y << 16)|(x & 0xFFFF));
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param[0x0] = 0x00000000;
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param[0x1] = 0x00000000;
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param[0x2] = ((h-1) << 16)|((w-1) & 0xFFFF);
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GPUCMD_AddIncrementalWrites(GPUREG_SCISSORTEST_MODE, param, 0x00000003);
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/* enable depth buffer */
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param[0x0] = 0x0000000F;
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param[0x1] = 0x0000000F;
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param[0x2] = 0x00000002;
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param[0x3] = 0x00000002;
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GPUCMD_AddIncrementalWrites(GPUREG_COLORBUFFER_READ, param, 0x00000004);
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}
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void GPU_SetScissorTest(GPU_SCISSORMODE mode, u32 left, u32 bottom, u32 right, u32 top)
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{
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u32 param[3];
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param[0x0] = mode;
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param[0x1] = (bottom << 16) | (left & 0xFFFF);
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param[0x2] = ((top-1) << 16) | ((right-1) & 0xFFFF);
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GPUCMD_AddIncrementalWrites(GPUREG_SCISSORTEST_MODE, param, 0x00000003);
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}
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void GPU_DepthMap(float zScale, float zOffset)
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{
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GPUCMD_AddWrite(GPUREG_DEPTHMAP_ENABLE, 0x00000001);
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GPUCMD_AddWrite(GPUREG_DEPTHMAP_SCALE, f32tof24(zScale));
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GPUCMD_AddWrite(GPUREG_DEPTHMAP_OFFSET, f32tof24(zOffset));
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}
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void GPU_SetAlphaTest(bool enable, GPU_TESTFUNC function, u8 ref)
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{
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GPUCMD_AddWrite(GPUREG_FRAGOP_ALPHA_TEST,
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(enable&1)|((function&7) << 4)|(ref << 8));
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}
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void GPU_SetStencilTest(bool enable, GPU_TESTFUNC function, u8 ref, u8 input_mask, u8 write_mask)
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{
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GPUCMD_AddWrite(GPUREG_STENCIL_TEST,
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(enable&1)|((function&7) << 4)|(write_mask << 8)|(ref << 16)|(input_mask << 24));
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}
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void GPU_SetStencilOp(GPU_STENCILOP sfail, GPU_STENCILOP dfail, GPU_STENCILOP pass)
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{
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GPUCMD_AddWrite(GPUREG_STENCIL_OP, sfail | (dfail << 4) | (pass << 8));
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}
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void GPU_SetDepthTestAndWriteMask(bool enable, GPU_TESTFUNC function, GPU_WRITEMASK writemask)
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{
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GPUCMD_AddWrite(GPUREG_DEPTH_COLOR_MASK, (enable&1)|((function&7) << 4)|(writemask << 8));
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}
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void GPU_SetAlphaBlending(GPU_BLENDEQUATION colorEquation, GPU_BLENDEQUATION alphaEquation,
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GPU_BLENDFACTOR colorSrc, GPU_BLENDFACTOR colorDst,
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GPU_BLENDFACTOR alphaSrc, GPU_BLENDFACTOR alphaDst)
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{
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GPUCMD_AddWrite(GPUREG_BLEND_FUNC, colorEquation | (alphaEquation << 8) | (colorSrc << 16) | (colorDst << 20) | (alphaSrc << 24) | (alphaDst << 28));
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GPUCMD_AddMaskedWrite(GPUREG_COLOR_OPERATION, 0x2, 0x00000100);
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}
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void GPU_SetColorLogicOp(GPU_LOGICOP op)
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{
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GPUCMD_AddWrite(GPUREG_LOGIC_OP, op);
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GPUCMD_AddMaskedWrite(GPUREG_COLOR_OPERATION, 0x2, 0x00000000);
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}
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void GPU_SetBlendingColor(u8 r, u8 g, u8 b, u8 a)
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{
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GPUCMD_AddWrite(GPUREG_BLEND_COLOR, r | (g << 8) | (b << 16) | (a << 24));
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}
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void GPU_SetTextureEnable(GPU_TEXUNIT units)
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{
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GPUCMD_AddMaskedWrite(GPUREG_SH_OUTATTR_CLOCK, 0x2, units << 8); /* enables texcoord outputs */
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GPUCMD_AddWrite(GPUREG_TEXUNIT_CONFIG, 0x00011000|units); /* enables texture units */
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}
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void GPU_SetTexture(GPU_TEXUNIT unit, u32* data, u16 width, u16 height, u32 param, GPU_TEXCOLOR colorType)
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{
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switch (unit)
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{
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case GPU_TEXUNIT0:
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GPUCMD_AddWrite(GPUREG_TEXUNIT0_TYPE, colorType);
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GPUCMD_AddWrite(GPUREG_TEXUNIT0_ADDR1, ((u32)data) >> 3);
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GPUCMD_AddWrite(GPUREG_TEXUNIT0_DIM, (width << 16)|height);
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GPUCMD_AddWrite(GPUREG_TEXUNIT0_PARAM, param);
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break;
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case GPU_TEXUNIT1:
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GPUCMD_AddWrite(GPUREG_TEXUNIT1_TYPE, colorType);
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GPUCMD_AddWrite(GPUREG_TEXUNIT1_ADDR, ((u32)data) >> 3);
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GPUCMD_AddWrite(GPUREG_TEXUNIT1_DIM, (width << 16)|height);
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GPUCMD_AddWrite(GPUREG_TEXUNIT1_PARAM, param);
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break;
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case GPU_TEXUNIT2:
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GPUCMD_AddWrite(GPUREG_TEXUNIT2_TYPE, colorType);
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GPUCMD_AddWrite(GPUREG_TEXUNIT2_ADDR, ((u32)data) >> 3);
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GPUCMD_AddWrite(GPUREG_TEXUNIT2_DIM, (width << 16)|height);
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GPUCMD_AddWrite(GPUREG_TEXUNIT2_PARAM, param);
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break;
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}
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}
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void GPU_SetTextureBorderColor(GPU_TEXUNIT unit,u32 borderColor)
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{
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switch (unit)
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{
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case GPU_TEXUNIT0:
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GPUCMD_AddWrite(GPUREG_TEXUNIT0_BORDER_COLOR, borderColor);
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break;
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case GPU_TEXUNIT1:
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GPUCMD_AddWrite(GPUREG_TEXUNIT1_BORDER_COLOR, borderColor);
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break;
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case GPU_TEXUNIT2:
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GPUCMD_AddWrite(GPUREG_TEXUNIT2_BORDER_COLOR, borderColor);
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break;
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}
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}
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const u8 GPU_FORMATSIZE[4]={1,1,2,4};
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void GPU_SetAttributeBuffers(
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u8 totalAttributes,
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u32* baseAddress,
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u64 attributeFormats,
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u16 attributeMask,
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u64 attributePermutation,
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u8 numBuffers,
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u32 bufferOffsets[],
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u64 bufferPermutations[],
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u8 bufferNumAttributes[])
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{
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int i, j;
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u32 param[0x28];
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u8 sizeTable[0xC];
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memset(param, 0x00, 0x28*4);
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param[0x0] = ((u32)baseAddress) >> 3;
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param[0x1] = attributeFormats & 0xFFFFFFFF;
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param[0x2] = ((totalAttributes-1) << 28) | ((attributeMask & 0xFFF) << 16) | ((attributeFormats >> 32) & 0xFFFF);
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for (i = 0; i < totalAttributes; i++)
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{
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u8 v = attributeFormats & 0xF;
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sizeTable[i] = GPU_FORMATSIZE[v & 3]*((v>>2)+1);
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attributeFormats >>= 4;
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}
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for (i = 0; i < numBuffers; i++)
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{
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u16 stride = 0;
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param[3*(i+1)+0] = bufferOffsets[i];
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param[3*(i+1)+1] = bufferPermutations[i] & 0xFFFFFFFF;
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for (j = 0; j < bufferNumAttributes[i]; j++)
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stride += sizeTable[(bufferPermutations[i]>>(4*j)) & 0xF];
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param[3*(i+1)+2] = (bufferNumAttributes[i] << 28) | ((stride & 0xFFF)<< 16) | ((bufferPermutations[i] >> 32) & 0xFFFF);
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}
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GPUCMD_AddIncrementalWrites(GPUREG_ATTRIBBUFFERS_LOC, param, 0x00000027);
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GPUCMD_AddMaskedWrite(GPUREG_VSH_INPUTBUFFER_CONFIG, 0xB, 0xA0000000|(totalAttributes-1));
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GPUCMD_AddWrite(GPUREG_VSH_NUM_ATTR, (totalAttributes-1));
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GPUCMD_AddIncrementalWrites(GPUREG_VSH_ATTRIBUTES_PERMUTATION_LOW, ((u32[]){attributePermutation & 0xFFFFFFFF, (attributePermutation >> 32) & 0xFFFF}), 2);
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}
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void GPU_SetAttributeBuffersAddress(u32* baseAddress)
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{
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GPUCMD_AddWrite(GPUREG_ATTRIBBUFFERS_LOC, ((u32)baseAddress) >> 3);
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}
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void GPU_SetFaceCulling(GPU_CULLMODE mode)
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{
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GPUCMD_AddWrite(GPUREG_FACECULLING_CONFIG, mode & 0x3);
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}
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void GPU_SetCombinerBufferWrite(u8 rgb_config, u8 alpha_config)
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{
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GPUCMD_AddMaskedWrite(GPUREG_TEXENV_UPDATE_BUFFER, 0x2, (rgb_config << 8) | (alpha_config << 12));
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}
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const u8 GPU_TEVID[]={0xC0,0xC8,0xD0,0xD8,0xF0,0xF8};
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void GPU_SetTexEnv(u8 id, u16 rgbSources, u16 alphaSources, u16 rgbOperands, u16 alphaOperands, GPU_COMBINEFUNC rgbCombine, GPU_COMBINEFUNC alphaCombine, u32 constantColor)
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{
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u32 param[0x5];
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if (id > 6)
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return;
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param[0x0] = (alphaSources << 16) | (rgbSources);
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param[0x1] = (alphaOperands << 12) | (rgbOperands);
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param[0x2] = (alphaCombine << 16) | (rgbCombine);
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param[0x3] = constantColor;
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param[0x4] = 0x00000000; /* ? */
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GPUCMD_AddIncrementalWrites(GPUREG_0000|GPU_TEVID[id], param, 0x00000005);
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}
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void GPU_DrawArray(GPU_Primitive_t primitive, u32 first, u32 count)
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{
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/* set primitive type */
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GPUCMD_AddMaskedWrite(GPUREG_PRIMITIVE_CONFIG, 0x2, primitive);
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GPUCMD_AddMaskedWrite(GPUREG_RESTART_PRIMITIVE, 0x2, 0x00000001);
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/* index buffer address register should be cleared
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* (except bit 31) before drawing */
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GPUCMD_AddWrite(GPUREG_INDEXBUFFER_CONFIG, 0x80000000);
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/* pass number of vertices */
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GPUCMD_AddWrite(GPUREG_NUMVERTICES, count);
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/* set first vertex */
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GPUCMD_AddWrite(GPUREG_VERTEX_OFFSET, first);
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/* all the following except 0x000F022E might be useless */
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GPUCMD_AddMaskedWrite(GPUREG_GEOSTAGE_CONFIG2, 0x1, 0x00000001);
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GPUCMD_AddMaskedWrite(GPUREG_START_DRAW_FUNC0, 0x1, 0x00000000);
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GPUCMD_AddWrite(GPUREG_DRAWARRAYS, 0x00000001);
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GPUCMD_AddMaskedWrite(GPUREG_START_DRAW_FUNC0, 0x1, 0x00000001);
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GPUCMD_AddWrite(GPUREG_VTX_FUNC, 0x00000001);
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GPUCMD_AddWrite(GPUREG_FRAMEBUFFER_FLUSH, 0x00000001);
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}
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void GPU_DrawElements(GPU_Primitive_t primitive, u32* indexArray, u32 n)
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{
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/* set primitive type */
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GPUCMD_AddMaskedWrite(GPUREG_PRIMITIVE_CONFIG, 0x2, primitive);
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GPUCMD_AddMaskedWrite(GPUREG_RESTART_PRIMITIVE, 0x2, 0x00000001);
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/* index buffer (TODO : support multiple types) */
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GPUCMD_AddWrite(GPUREG_INDEXBUFFER_CONFIG, 0x80000000|((u32)indexArray));
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/* pass number of vertices */
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GPUCMD_AddWrite(GPUREG_NUMVERTICES, n);
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GPUCMD_AddWrite(GPUREG_VERTEX_OFFSET, 0x00000000);
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GPUCMD_AddMaskedWrite(GPUREG_GEOSTAGE_CONFIG, 0x2, 0x00000100);
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GPUCMD_AddMaskedWrite(GPUREG_GEOSTAGE_CONFIG2, 0x2, 0x00000100);
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GPUCMD_AddMaskedWrite(GPUREG_START_DRAW_FUNC0, 0x1, 0x00000000);
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GPUCMD_AddWrite(GPUREG_DRAWELEMENTS, 0x00000001);
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GPUCMD_AddMaskedWrite(GPUREG_START_DRAW_FUNC0, 0x1, 0x00000001);
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GPUCMD_AddWrite(GPUREG_VTX_FUNC, 0x00000001);
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/* CHECKME: does this one also require
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* GPUREG_FRAMEBUFFER_FLUSH at the end? */
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}
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void GPU_FinishDrawing(void)
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{
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GPUCMD_AddWrite(GPUREG_FRAMEBUFFER_FLUSH, 0x00000001);
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GPUCMD_AddWrite(GPUREG_FRAMEBUFFER_INVALIDATE, 0x00000001);
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GPUCMD_AddWrite(GPUREG_EARLYDEPTH_CLEAR, 0x00000001);
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}
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void GPU_Finalize(void)
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{
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GPUCMD_AddMaskedWrite(GPUREG_PRIMITIVE_CONFIG, 0x8, 0x00000000);
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GPUCMD_AddWrite(GPUREG_FRAMEBUFFER_FLUSH, 0x00000001);
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GPUCMD_AddWrite(GPUREG_FRAMEBUFFER_INVALIDATE, 0x00000001);
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#if 0
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GPUCMD_Split(NULL, NULL);
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#else
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GPUCMD_AddWrite(GPUREG_FINALIZE, 0x12345678);
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/* not the cleanest way of guaranteeing 0x10-byte size
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* but whatever good enough for now */
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GPUCMD_AddWrite(GPUREG_FINALIZE,0x12345678);
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#endif
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}
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