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- [Psy-X] misc shader stuff

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This commit is contained in:
Ilya Shurumov 2020-12-21 16:36:04 +06:00
parent 0a1890da29
commit bf244e5560
1 changed files with 13 additions and 14 deletions
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27
src_rebuild/PsyX/EMULATOR.C
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@ -974,32 +974,32 @@ GLint u_Projection3D;
#define GPU_SAMPLE_TEXTURE_4BIT_FUNC\
" // returns 16 bit colour\n"\
" float samplePSX(vec2 tc){\n"\
" vec2 uv = (tc * vec2(0.25, 1.0) + v_page_clut.xy) * vec2(1.0 / 1024.0, 1.0 / 512.0);\n"\
" vec2 uv = (tc * vec2(0.25, 1.0) + v_page_clut.xy) * c_VRAMTexel;\n"\
" vec2 comp = VRAM(uv);\n"\
" int index = int(fract(tc.x / 4.0 + 0.0001) * 4.0);\n"\
" float v = comp[index / 2] * (c_PackRange / 16.0);\n"\
" float f = floor(v);\n"\
" vec2 c = vec2( (v - f) * 16.0, f );\n"\
" vec2 clut_pos = v_page_clut.zw;\n"\
" clut_pos.x += mix(c[0], c[1], mod(index, 2)) / 1024.0;\n"\
" clut_pos.x += mix(c[0], c[1], mod(index, 2)) * c_VRAMTexel.x;\n"\
" return packRG(VRAM(clut_pos));\n"\
" }\n"
#define GPU_SAMPLE_TEXTURE_8BIT_FUNC\
" // returns 16 bit colour\n"\
" float samplePSX(vec2 tc){\n"\
" vec2 uv = (tc * vec2(0.5, 1.0) + v_page_clut.xy) * vec2(1.0 / 1024.0, 1.0 / 512.0);\n"\
" vec2 uv = (tc * vec2(0.5, 1.0) + v_page_clut.xy) * c_VRAMTexel;\n"\
" vec2 comp = VRAM(uv);\n"\
" vec2 clut_pos = v_page_clut.zw;\n"\
" int index = int(mod(tc.x, 2.0));\n"\
" clut_pos.x += comp[index] * c_PackRange / 1024.0;\n"\
" clut_pos.x += comp[index] * c_PackRange * c_VRAMTexel.x;\n"\
" vec2 color_rg = VRAM(clut_pos);\n"\
" return packRG(VRAM(clut_pos));\n"\
" }\n"
#define GPU_SAMPLE_TEXTURE_16BIT_FUNC\
" float samplePSX(vec2 tc){\n"\
" vec2 uv = (tc + v_page_clut.xy) * vec2(1.0 / 1024.0, 1.0 / 512.0);\n"\
" vec2 uv = (tc + v_page_clut.xy) * c_VRAMTexel;\n"\
" vec2 color_rg = VRAM(uv);\n"\
" return packRG(color_rg);\n"\
" }\n"
@ -1009,16 +1009,15 @@ GLint u_Projection3D;
" float c_textureSize = 1;\n"\
" float c_onePixel = 1;\n"\
" vec4 BilinearTextureSample(vec2 P) {\n"\
" vec2 pixel = P + vec2(1.0, 1);\n"\
" vec2 frac = fract(pixel);\n"\
" pixel = floor(pixel) - vec2(c_onePixel * 0.5);\n"\
" float C11 = samplePSX(pixel + vec2( 0.0 , 0.0));\n"\
" float C21 = samplePSX(pixel + vec2( c_onePixel, 0.0));\n"\
" float C12 = samplePSX(pixel + vec2( 0.0 , c_onePixel));\n"\
" float C22 = samplePSX(pixel + vec2( c_onePixel, c_onePixel));\n"\
" vec2 frac = fract(P);\n"\
" vec2 pixel = floor(P);\n"\
" float C11 = samplePSX(pixel);\n"\
" float C21 = samplePSX(pixel + vec2(c_onePixel, 0.0));\n"\
" float C12 = samplePSX(pixel + vec2(0.0, c_onePixel));\n"\
" float C22 = samplePSX(pixel + vec2(c_onePixel, c_onePixel));\n"\
" float ax1 = mix(float(C11 > 0), float(C21 > 0), frac.x);\n"\
" float ax2 = mix(float(C12 > 0), float(C22 > 0), frac.x);\n"\
" if(mix(ax1, ax2, frac.y) < 0.25) { discard; }\n"\
" if(mix(ax1, ax2, frac.y) < 0.5) { discard; }\n"\
" vec4 x1 = mix(decodeRG(C11), decodeRG(C21), frac.x);\n"\
" vec4 x2 = mix(decodeRG(C12), decodeRG(C22), frac.x);\n"\
" return mix(x1, x2, frac.y);\n"\
@ -1082,6 +1081,7 @@ GLint u_Projection3D;
GPU_PACK_RG_FUNC\
GPU_DECODE_RG_FUNC\
GPU_FETCH_VRAM_FUNC\
" const vec2 c_VRAMTexel = vec2(1.0 / 1024.0, 1.0 / 512.0);\n"\
GPU_SAMPLE_TEXTURE_## bit ##BIT_FUNC\
"#ifdef BILINEAR_FILTER\n"\
GPU_BILINEAR_SAMPLE_FUNC\
@ -1254,7 +1254,6 @@ ShaderID Shader_Compile(const char *source)
glBindAttribLocation(program, a_color, "a_color");
#ifdef USE_PGXP
glBindAttribLocation(program, a_zw, "a_zw");
#endif