diff options
| author | M.G. Kishalmi <lmg@kishalmi.net> | 2011-02-08 00:57:40 +0300 |
|---|---|---|
| committer | M.G. Kishalmi <lmg@kishalmi.net> | 2011-02-08 00:57:40 +0300 |
| commit | 16160f5fcc1689d8008603442fe31b4edb507fb2 (patch) | |
| tree | 35e065da38016a6022b6509242932cedb31d2d34 /source/blender/gpu/intern | |
| parent | a6baee52989ce520d76f440e7d089f755c8cfd5b (diff) | |
GLSL shader part
bump-mapping update to properly support
multiple textures in different bump-spaces.
Diffstat (limited to 'source/blender/gpu/intern')
| -rw-r--r-- | source/blender/gpu/intern/gpu_material.c | 65 | ||||
| -rw-r--r-- | source/blender/gpu/intern/gpu_shader_material.glsl | 79 | ||||
| -rw-r--r-- | source/blender/gpu/intern/gpu_shader_material.glsl.c | 1624 |
3 files changed, 944 insertions, 824 deletions
diff --git a/source/blender/gpu/intern/gpu_material.c b/source/blender/gpu/intern/gpu_material.c index c57499890ee..d1424dcabcd 100644 --- a/source/blender/gpu/intern/gpu_material.c +++ b/source/blender/gpu/intern/gpu_material.c @@ -892,6 +892,8 @@ static void do_material_tex(GPUShadeInput *shi) char *lastuvname = NULL; float one = 1.0f, norfac, ofs[3]; int tex_nr, rgbnor, talpha; + int init_done = 0, iBumpSpacePrev; + GPUNodeLink *vNorg, *vNacc, *fPrevMagnitude; GPU_link(mat, "set_value", GPU_uniform(&one), &stencil); @@ -1055,12 +1057,13 @@ static void do_material_tex(GPUShadeInput *shi) } else if( mtex->texflag & (MTEX_3TAP_BUMP|MTEX_5TAP_BUMP)) { /* ntap bumpmap image */ + int iBumpSpace; float hScale = 0.1f; // compatibility adjustment factor for all bumpspace types float hScaleTex = 13.0f; // factor for scaling texspace bumps GPUNodeLink *surf_pos = GPU_builtin(GPU_VIEW_POSITION); - GPUNodeLink *vR1, *vR2, *fDet; - GPUNodeLink *dBs, *dBt, *vN; + GPUNodeLink *vR1, *vR2; + GPUNodeLink *dBs, *dBt, *fDet; if( mtex->texflag & MTEX_BUMP_TEXTURESPACE ) hScale = hScaleTex; @@ -1070,15 +1073,49 @@ static void do_material_tex(GPUShadeInput *shi) if(GPU_link_changed(stencil)) GPU_link(mat, "math_multiply", tnorfac, stencil, &tnorfac); + if( !init_done ) { + // copy shi->vn to vNorg and vNacc, set magnitude to 1 + GPU_link(mat, "mtex_bump_normals_init", shi->vn, &vNorg, &vNacc, &fPrevMagnitude); + iBumpSpacePrev = 0; + init_done = 1; + } + + // find current bump space if( mtex->texflag & MTEX_BUMP_OBJECTSPACE ) - GPU_link( mat, "mtex_bump_init_objspace", - surf_pos, shi->vn, - GPU_builtin(GPU_VIEW_MATRIX), GPU_builtin(GPU_INVERSE_VIEW_MATRIX), GPU_builtin(GPU_OBJECT_MATRIX), GPU_builtin(GPU_INVERSE_OBJECT_MATRIX), - &vR1, &vR2, &fDet, &vN ); + iBumpSpace = 1; + else if( mtex->texflag & MTEX_BUMP_TEXTURESPACE ) + iBumpSpace = 2; else - GPU_link( mat, "mtex_bump_init_viewspace", - surf_pos, shi->vn, - &vR1, &vR2, &fDet, &vN ); + iBumpSpace = 4; // ViewSpace + + // re-initialize if bump space changed + if( iBumpSpacePrev != iBumpSpace ) { + + if( mtex->texflag & MTEX_BUMP_OBJECTSPACE ) + GPU_link( mat, "mtex_bump_init_objspace", + surf_pos, vNorg, + GPU_builtin(GPU_VIEW_MATRIX), GPU_builtin(GPU_INVERSE_VIEW_MATRIX), GPU_builtin(GPU_OBJECT_MATRIX), GPU_builtin(GPU_INVERSE_OBJECT_MATRIX), + fPrevMagnitude, vNacc, + &fPrevMagnitude, &vNacc, + &vR1, &vR2, &fDet ); + + else if( mtex->texflag & MTEX_BUMP_TEXTURESPACE ) + GPU_link( mat, "mtex_bump_init_texturespace", + surf_pos, vNorg, + fPrevMagnitude, vNacc, + &fPrevMagnitude, &vNacc, + &vR1, &vR2, &fDet ); + + else + GPU_link( mat, "mtex_bump_init_viewspace", + surf_pos, vNorg, + fPrevMagnitude, vNacc, + &fPrevMagnitude, &vNacc, + &vR1, &vR2, &fDet ); + + iBumpSpacePrev = iBumpSpace; + } + if( mtex->texflag & MTEX_3TAP_BUMP ) GPU_link( mat, "mtex_bump_tap3", @@ -1089,6 +1126,7 @@ static void do_material_tex(GPUShadeInput *shi) texco, GPU_image(tex->ima, &tex->iuser), tnorfac, &dBs, &dBt ); + if( mtex->texflag & MTEX_BUMP_TEXTURESPACE ) { float ima_x= 512.0f, ima_y= 512.f; // prevent calling textureSize, glsl 1.3 only ImBuf *ibuf= BKE_image_get_ibuf(tex->ima, &tex->iuser); @@ -1096,12 +1134,13 @@ static void do_material_tex(GPUShadeInput *shi) ima_x= ibuf->x; ima_y= ibuf->y; GPU_link( mat, "mtex_bump_apply_texspace", - fDet, dBs, dBt, vR1, vR2, vN, GPU_image(tex->ima, &tex->iuser), texco, - GPU_uniform(&ima_x), GPU_uniform(&ima_y), &shi->vn ); + fDet, dBs, dBt, vR1, vR2, + GPU_image(tex->ima, &tex->iuser), texco, GPU_uniform(&ima_x), GPU_uniform(&ima_y), vNacc, + &vNacc, &shi->vn ); } else GPU_link( mat, "mtex_bump_apply", - fDet, dBs, dBt, vR1, vR2, vN, - &shi->vn ); + fDet, dBs, dBt, vR1, vR2, vNacc, + &vNacc, &shi->vn ); } } diff --git a/source/blender/gpu/intern/gpu_shader_material.glsl b/source/blender/gpu/intern/gpu_shader_material.glsl index 6c2b2e68a2c..21e62b2c272 100644 --- a/source/blender/gpu/intern/gpu_shader_material.glsl +++ b/source/blender/gpu/intern/gpu_shader_material.glsl @@ -1102,16 +1102,11 @@ void mtex_normal(vec3 texco, sampler2D ima, out vec3 normal) normal = 2.0*(vec3(color.r, -color.g, color.b) - vec3(0.5, -0.5, 0.5)); } -void mtex_bump_init_viewspace( vec3 surf_pos, vec3 surf_norm, - out vec3 vR1, out vec3 vR2, out float fDet, out vec3 vN ) +void mtex_bump_normals_init( vec3 vN, out vec3 vNorg, out vec3 vNacc, out float fPrevMagnitude ) { - vec3 vSigmaS = dFdx( surf_pos ); - vec3 vSigmaT = dFdy( surf_pos ); - vN = surf_norm; /* normalized interpolated vertex normal */ - - vR1 = cross( vSigmaT , vN ); - vR2 = cross( vN , vSigmaS ) ; - fDet = dot ( vSigmaS , vR1 ); + vNorg = vN; + vNacc = vN; + fPrevMagnitude = 1.0; } /** helper method to extract the upper left 3x3 matrix from a 4x4 matrix */ @@ -1125,25 +1120,66 @@ mat3 to_mat3(mat4 m4) } void mtex_bump_init_objspace( vec3 surf_pos, vec3 surf_norm, - mat4 mView, mat4 mViewInv, mat4 mObj, mat4 mObjInv, - out vec3 vR1, out vec3 vR2, out float fDet, out vec3 vN ) + mat4 mView, mat4 mViewInv, mat4 mObj, mat4 mObjInv, + float fPrevMagnitude_in, vec3 vNacc_in, + out float fPrevMagnitude_out, out vec3 vNacc_out, + out vec3 vR1, out vec3 vR2, out float fDet ) { mat3 obj2view = to_mat3(mView * mObj); mat3 view2obj = to_mat3(mObjInv * mViewInv); vec3 vSigmaS = view2obj * dFdx( surf_pos ); vec3 vSigmaT = view2obj * dFdy( surf_pos ); - vN = normalize( surf_norm * obj2view ); + vec3 vN = normalize( surf_norm * obj2view ); vR1 = cross( vSigmaT , vN ); vR2 = cross( vN , vSigmaS ) ; fDet = dot ( vSigmaS , vR1 ); - /* transform back */ + /* pretransform vNacc (in mtex_bump_apply) using the inverse transposed */ vR1 = vR1 * view2obj; vR2 = vR2 * view2obj; vN = vN * view2obj; + + float fMagnitude = abs(fDet) * length(vN); + vNacc_out = vNacc_in * (fMagnitude / fPrevMagnitude_in); + fPrevMagnitude_out = fMagnitude; +} + +void mtex_bump_init_texturespace( vec3 surf_pos, vec3 surf_norm, + float fPrevMagnitude_in, vec3 vNacc_in, + out float fPrevMagnitude_out, out vec3 vNacc_out, + out vec3 vR1, out vec3 vR2, out float fDet ) +{ + vec3 vSigmaS = dFdx( surf_pos ); + vec3 vSigmaT = dFdy( surf_pos ); + vec3 vN = surf_norm; /* normalized interpolated vertex normal */ + + vR1 = normalize( cross( vSigmaT , vN ) ); + vR2 = normalize( cross( vN , vSigmaS ) ); + fDet = (dot( vSigmaS , vR1 ) < 0)? (-1): 1; + + float fMagnitude = abs(fDet); + vNacc_out = vNacc_in * (fMagnitude / fPrevMagnitude_in); + fPrevMagnitude_out = fMagnitude; +} +void mtex_bump_init_viewspace( vec3 surf_pos, vec3 surf_norm, + float fPrevMagnitude_in, vec3 vNacc_in, + out float fPrevMagnitude_out, out vec3 vNacc_out, + out vec3 vR1, out vec3 vR2, out float fDet ) +{ + vec3 vSigmaS = dFdx( surf_pos ); + vec3 vSigmaT = dFdy( surf_pos ); + vec3 vN = surf_norm; /* normalized interpolated vertex normal */ + + vR1 = cross( vSigmaT , vN ); + vR2 = cross( vN , vSigmaS ) ; + fDet = dot ( vSigmaS , vR1 ); + + float fMagnitude = abs(fDet); + vNacc_out = vNacc_in * (fMagnitude / fPrevMagnitude_in); + fPrevMagnitude_out = fMagnitude; } void mtex_bump_tap3( vec3 texco, sampler2D ima, float hScale, @@ -1185,16 +1221,18 @@ void mtex_bump_tap5( vec3 texco, sampler2D ima, float hScale, dBt = hScale * (Hu - Hd); } -void mtex_bump_apply( float fDet, float dBs, float dBt, vec3 vR1, vec3 vR2, vec3 vN, - out vec3 perturbed_norm ) +void mtex_bump_apply( float fDet, float dBs, float dBt, vec3 vR1, vec3 vR2, vec3 vNacc_in, + out vec3 vNacc_out, out vec3 perturbed_norm ) { vec3 vSurfGrad = sign(fDet) * ( dBs * vR1 + dBt * vR2 ); - perturbed_norm = normalize( abs(fDet) * vN - vSurfGrad ); + vNacc_out = vNacc_in - vSurfGrad; + perturbed_norm = normalize( vNacc_out ); } -void mtex_bump_apply_texspace( float fDet, float dBs, float dBt, vec3 vR1, vec3 vR2, vec3 vN, - sampler2D ima, vec3 texco, float ima_x, float ima_y, out vec3 perturbed_norm ) +void mtex_bump_apply_texspace( float fDet, float dBs, float dBt, vec3 vR1, vec3 vR2, + sampler2D ima, vec3 texco, float ima_x, float ima_y, vec3 vNacc_in, + out vec3 vNacc_out, out vec3 perturbed_norm ) { vec2 TexDx = dFdx(texco.xy); vec2 TexDy = dFdy(texco.xy); @@ -1202,8 +1240,9 @@ void mtex_bump_apply_texspace( float fDet, float dBs, float dBt, vec3 vR1, vec3 vec3 vSurfGrad = sign(fDet) * ( dBs / length( vec2(ima_x*TexDx.x, ima_y*TexDx.y) ) * normalize(vR1) + dBt / length( vec2(ima_x*TexDy.x, ima_y*TexDy.y) ) * normalize(vR2) ); - perturbed_norm = normalize( vN - vSurfGrad ); - + + vNacc_out = vNacc_in - vSurfGrad; + perturbed_norm = normalize( vNacc_out ); } void mtex_negate_texnormal(vec3 normal, out vec3 outnormal) diff --git a/source/blender/gpu/intern/gpu_shader_material.glsl.c b/source/blender/gpu/intern/gpu_shader_material.glsl.c index 36cf4dd3497..be431d72d17 100644 --- a/source/blender/gpu/intern/gpu_shader_material.glsl.c +++ b/source/blender/gpu/intern/gpu_shader_material.glsl.c @@ -1,822 +1,864 @@ /* DataToC output of file <gpu_shader_material_glsl> */ -int datatoc_gpu_shader_material_glsl_size= 37417; +int datatoc_gpu_shader_material_glsl_size= 38764; char datatoc_gpu_shader_material_glsl[]= { - 10,102,108,111, 97,116, 32,101,120, -112, 95, 98,108,101,110,100,101,114, 40,102,108,111, 97,116, 32,102, 41, 10,123, 10, 9,114,101,116,117,114,110, 32,112,111,119, - 40, 50, 46, 55, 49, 56, 50, 56, 49, 56, 50, 56, 52, 54, 44, 32,102, 41, 59, 10,125, 10, 10,118,111,105,100, 32,114,103, 98, 95, -116,111, 95,104,115,118, 40,118,101, 99, 52, 32,114,103, 98, 44, 32,111,117,116, 32,118,101, 99, 52, 32,111,117,116, 99,111,108, - 41, 10,123, 10, 9,102,108,111, 97,116, 32, 99,109, 97,120, 44, 32, 99,109,105,110, 44, 32,104, 44, 32,115, 44, 32,118, 44, 32, - 99,100,101,108,116, 97, 59, 10, 9,118,101, 99, 51, 32, 99, 59, 10, 10, 9, 99,109, 97,120, 32, 61, 32,109, 97,120, 40,114,103, - 98, 91, 48, 93, 44, 32,109, 97,120, 40,114,103, 98, 91, 49, 93, 44, 32,114,103, 98, 91, 50, 93, 41, 41, 59, 10, 9, 99,109,105, -110, 32, 61, 32,109,105,110, 40,114,103, 98, 91, 48, 93, 44, 32,109,105,110, 40,114,103, 98, 91, 49, 93, 44, 32,114,103, 98, 91, - 50, 93, 41, 41, 59, 10, 9, 99,100,101,108,116, 97, 32, 61, 32, 99,109, 97,120, 45, 99,109,105,110, 59, 10, 10, 9,118, 32, 61, - 32, 99,109, 97,120, 59, 10, 9,105,102, 32, 40, 99,109, 97,120, 33, 61, 48, 46, 48, 41, 10, 9, 9,115, 32, 61, 32, 99,100,101, -108,116, 97, 47, 99,109, 97,120, 59, 10, 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48, 41, 10, 9, 9, 9,104, 32, 61, 32, 48, 46, 48, 59, 10, 9, 9, 10, 9, 9,104, 32, 42, 61, 32, 54, 46, 48, 59, 10, 9, 9, -105, 32, 61, 32,102,108,111,111,114, 40,104, 41, 59, 10, 9, 9,102, 32, 61, 32,104, 32, 45, 32,105, 59, 10, 9, 9,114,103, 98, - 32, 61, 32,118,101, 99, 51, 40,102, 44, 32,102, 44, 32,102, 41, 59, 10, 9, 9,112, 32, 61, 32,118, 42, 40, 49, 46, 48, 45,115, - 41, 59, 10, 9, 9,113, 32, 61, 32,118, 42, 40, 49, 46, 48, 45, 40,115, 42,102, 41, 41, 59, 10, 9, 9,116, 32, 61, 32,118, 42, - 40, 49, 46, 48, 45, 40,115, 42, 40, 49, 46, 48, 45,102, 41, 41, 41, 59, 10, 9, 9, 10, 9, 9,105,102, 32, 40,105, 32, 61, 61, - 32, 48, 46, 48, 41, 32,114,103, 98, 32, 61, 32,118,101, 99, 51, 40,118, 44, 32,116, 44, 32,112, 41, 59, 10, 9, 9,101,108,115, -101, 32,105,102, 32, 40,105, 32, 61, 61, 32, 49, 46, 48, 41, 32,114,103, 98, 32, 61, 32,118,101, 99, 51, 40,113, 44, 32,118, 44, - 32,112, 41, 59, 10, 9, 9,101,108,115,101, 32,105,102, 32, 40,105, 32, 61, 61, 32, 50, 46, 48, 41, 32,114,103, 98, 32, 61, 32, -118,101, 99, 51, 40,112, 44, 32,118, 44, 32,116, 41, 59, 10, 9, 9,101,108,115,101, 32,105,102, 32, 40,105, 32, 61, 61, 32, 51, - 46, 48, 41, 32,114,103, 98, 32, 61, 32,118,101, 99, 51, 40,112, 44, 32,113, 44, 32,118, 41, 59, 10, 9, 9,101,108,115,101, 32, -105,102, 32, 40,105, 32, 61, 61, 32, 52, 46, 48, 41, 32,114,103, 98, 32, 61, 32,118,101, 99, 51, 40,116, 44, 32,112, 44, 32,118, - 41, 59, 10, 9, 9,101,108,115,101, 32,114,103, 98, 32, 61, 32,118,101, 99, 51, 40,118, 44, 32,112, 44, 32,113, 41, 59, 10, 9, -125, 10, 10, 9,111,117,116, 99,111,108, 32, 61, 32,118,101, 99, 52, 40,114,103, 98, 44, 32,104,115,118, 46,119, 41, 59, 10,125, - 10, 10,102,108,111, 97,116, 32,115,114,103, 98, 95,116,111, 95,108,105,110,101, 97,114,114,103, 98, 40,102,108,111, 97,116, 32, - 99, 41, 10,123, 10, 9,105,102, 40, 99, 32, 60, 32, 48, 46, 48, 52, 48, 52, 53, 41, 10, 9, 9,114,101,116,117,114,110, 32, 40, - 99, 32, 60, 32, 48, 46, 48, 41, 63, 32, 48, 46, 48, 58, 32, 99, 32, 42, 32, 40, 49, 46, 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