From bd85882614b1f77e3465f300b095911e7acc90e0 Mon Sep 17 00:00:00 2001 From: divverent Date: Wed, 30 Mar 2011 21:17:16 +0000 Subject: [PATCH] start implementing REFRACTION git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@10986 d7cf8633-e32d-0410-b094-e92efae38249 ::stable-branch::merge=3af2dac85615d395aab582b44e4b9f3eb3375fef --- dpsoftrast.c | 91 +++++++++++++++++++++++++++++++++++++++++++++++++-- shader_glsl.h | 3 -- 2 files changed, 88 insertions(+), 6 deletions(-) diff --git a/dpsoftrast.c b/dpsoftrast.c index 8edf4257..10e0e767 100644 --- a/dpsoftrast.c +++ b/dpsoftrast.c @@ -4350,16 +4350,101 @@ void DPSOFTRAST_PixelShader_LightSource(DPSOFTRAST_State_Thread *thread, const D void DPSOFTRAST_VertexShader_Refraction(void) { + int i; + int numvertices = dpsoftrast.numvertices; + + DPSOFTRAST_Array_Transform(DPSOFTRAST_ARRAY_TEXCOORD1, DPSOFTRAST_ARRAY_POSITION, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM1); + DPSOFTRAST_Array_Transform(DPSOFTRAST_ARRAY_TEXCOORD0, DPSOFTRAST_ARRAY_TEXCOORD0, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_TexMatrixM1); DPSOFTRAST_Array_TransformProject(DPSOFTRAST_ARRAY_POSITION, DPSOFTRAST_ARRAY_POSITION, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM1); + + for (i = 0;i < numvertices;i++) + { + dpsoftrast.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD1][i*4+0] /= dpsoftrast.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD1][i*4+3]; + dpsoftrast.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD1][i*4+1] /= dpsoftrast.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD1][i*4+3]; + dpsoftrast.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD1][i*4+2] /= dpsoftrast.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD1][i*4+3]; + } } void DPSOFTRAST_PixelShader_Refraction(DPSOFTRAST_State_Thread *thread, const DPSOFTRAST_State_Triangle * RESTRICT triangle, const DPSOFTRAST_State_Span * RESTRICT span) { - // TODO: IMPLEMENT + // DIRTY TRICK: only do sideways displacement. Not correct, but cheaper and thus better for SW. + float buffer_z[DPSOFTRAST_DRAW_MAXSPANLENGTH]; + float z; + int x, startx = span->startx, endx = span->endx; + + // texture reads + unsigned char buffer_texture_normalbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4]; + unsigned char buffer_texture_refractionbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4]; unsigned char buffer_FragColorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4]; + + // varyings + float ModelViewProjectionPositiondata[4]; + float ModelViewProjectionPositionslope[4]; + + // uniforms + float ScreenScaleRefractReflect[2]; + float ScreenCenterRefractReflect[2]; + float DistortScaleRefractReflect[2]; + float RefractColor[4]; + + // read textures DPSOFTRAST_Draw_Span_Begin(thread, triangle, span, buffer_z); - memset(buffer_FragColorbgra8 + span->startx*4, 0, (span->endx - span->startx)*4); + DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(thread, triangle, span, buffer_texture_normalbgra8, GL20TU_NORMAL, DPSOFTRAST_ARRAY_TEXCOORD0, buffer_z); + DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(thread, triangle, span, buffer_texture_refractionbgra8, GL20TU_REFRACTION, DPSOFTRAST_ARRAY_TEXCOORD1, buffer_z); + + // read varyings + DPSOFTRAST_CALCATTRIB4F(triangle, span, ModelViewProjectionPositiondata, ModelViewProjectionPositionslope, DPSOFTRAST_ARRAY_TEXCOORD1); // or POSITION? + printf("texcoord: from %f to %f\n", buffer_z[startx] * (ModelViewProjectionPositiondata[0] + startx * ModelViewProjectionPositionslope[0]), buffer_z[endx-1] * (ModelViewProjectionPositiondata[0] + (endx-1) * ModelViewProjectionPositionslope[0])); + + // read uniforms + ScreenScaleRefractReflect[0] = thread->uniform4f[DPSOFTRAST_UNIFORM_ScreenScaleRefractReflect*4+0]; + ScreenScaleRefractReflect[1] = thread->uniform4f[DPSOFTRAST_UNIFORM_ScreenScaleRefractReflect*4+1]; + ScreenCenterRefractReflect[0] = thread->uniform4f[DPSOFTRAST_UNIFORM_ScreenCenterRefractReflect*4+0]; + ScreenCenterRefractReflect[1] = thread->uniform4f[DPSOFTRAST_UNIFORM_ScreenCenterRefractReflect*4+1]; + DistortScaleRefractReflect[0] = thread->uniform4f[DPSOFTRAST_UNIFORM_DistortScaleRefractReflect*4+0]; + DistortScaleRefractReflect[1] = thread->uniform4f[DPSOFTRAST_UNIFORM_DistortScaleRefractReflect*4+1]; + RefractColor[0] = thread->uniform4f[DPSOFTRAST_UNIFORM_RefractColor*4+2]; + RefractColor[1] = thread->uniform4f[DPSOFTRAST_UNIFORM_RefractColor*4+1]; + RefractColor[2] = thread->uniform4f[DPSOFTRAST_UNIFORM_RefractColor*4+0]; + RefractColor[3] = thread->uniform4f[DPSOFTRAST_UNIFORM_RefractColor*4+3]; + + // do stuff + for (x = startx;x < endx;x++) + { + float ScreenScaleRefractReflectIW[2]; + float SafeScreenTexCoord[2]; + float ScreenTexCoord[2]; + float v[3]; + int p; + + z = buffer_z[x]; + + // " vec2 ScreenScaleRefractReflectIW = ScreenScaleRefractReflect.xy * (1.0 / ModelViewProjectionPosition.w);\n" + // "IW" was done in the vertex shader in the ModelViewProjectionPosition instead! + + // " vec2 SafeScreenTexCoord = ModelViewProjectionPosition.xy * ScreenScaleRefractReflectIW + ScreenCenterRefractReflect.xy;\n" + SafeScreenTexCoord[0] = (ModelViewProjectionPositiondata[0] + ModelViewProjectionPositionslope[0]*x) * z * ScreenScaleRefractReflect[0] + ScreenCenterRefractReflect[0]; + SafeScreenTexCoord[1] = (ModelViewProjectionPositiondata[1] + ModelViewProjectionPositionslope[1]*x) * z * ScreenScaleRefractReflect[1] + ScreenCenterRefractReflect[1]; + + // " vec2 ScreenTexCoord = SafeScreenTexCoord + vec3(normalize(myhalf3(dp_texture2D(Texture_Normal, TexCoord)) - myhalf3(0.5))).xy * DistortScaleRefractReflect.zw;\n" + v[0] = buffer_texture_normalbgra8[x*4+2] * (1.0f / 128.0f) - 1.0f; + v[1] = buffer_texture_normalbgra8[x*4+1] * (1.0f / 128.0f) - 1.0f; + v[2] = buffer_texture_normalbgra8[x*4+0] * (1.0f / 128.0f) - 1.0f; + DPSOFTRAST_Vector3Normalize(v); + ScreenTexCoord[0] = SafeScreenTexCoord[0] + v[0] * DistortScaleRefractReflect[0]; + ScreenTexCoord[1] = SafeScreenTexCoord[1] + v[1] * DistortScaleRefractReflect[1]; + + // " dp_FragColor = vec4(dp_texture2D(Texture_Refraction, ScreenTexCoord).rgb, 1.0) * RefractColor;\n" + p = (int) bound(startx, x + (ScreenTexCoord[0] - SafeScreenTexCoord[0]) / (ModelViewProjectionPositionslope[0]*z), endx-1); + p = x; // debug + buffer_FragColorbgra8[x*4+0] = buffer_texture_refractionbgra8[p*4+0] * RefractColor[0]; + buffer_FragColorbgra8[x*4+1] = buffer_texture_refractionbgra8[p*4+1] * RefractColor[1]; + buffer_FragColorbgra8[x*4+2] = buffer_texture_refractionbgra8[p*4+2] * RefractColor[2]; + buffer_FragColorbgra8[x*4+3] = RefractColor[3] * 256; if(buffer_FragColorbgra8[x*4+3] > 255) buffer_FragColorbgra8[x*4+3] = 255; + buffer_FragColorbgra8[x*4+3] = 255; // WHY?!?!?!?!??!?!? is RefractColor[3] apparently 0? + } + DPSOFTRAST_Draw_Span_FinishBGRA8(thread, triangle, span, buffer_FragColorbgra8); } @@ -4457,7 +4542,7 @@ static const DPSOFTRAST_ShaderModeInfo DPSOFTRAST_ShaderModeTable[SHADERMODE_COU {2, DPSOFTRAST_VertexShader_LightDirectionMap_TangentSpace, DPSOFTRAST_PixelShader_LightDirectionMap_TangentSpace, {DPSOFTRAST_ARRAY_TEXCOORD0, DPSOFTRAST_ARRAY_TEXCOORD1, DPSOFTRAST_ARRAY_TEXCOORD2, DPSOFTRAST_ARRAY_TEXCOORD3, DPSOFTRAST_ARRAY_TEXCOORD4, DPSOFTRAST_ARRAY_TEXCOORD5, DPSOFTRAST_ARRAY_TEXCOORD6, ~0}, {GL20TU_COLOR, GL20TU_PANTS, GL20TU_SHIRT, GL20TU_GLOW, GL20TU_NORMAL, GL20TU_GLOSS, GL20TU_LIGHTMAP, GL20TU_DELUXEMAP, ~0}}, {2, DPSOFTRAST_VertexShader_LightDirection, DPSOFTRAST_PixelShader_LightDirection, {DPSOFTRAST_ARRAY_TEXCOORD0, DPSOFTRAST_ARRAY_TEXCOORD1, DPSOFTRAST_ARRAY_TEXCOORD2, DPSOFTRAST_ARRAY_TEXCOORD3, DPSOFTRAST_ARRAY_TEXCOORD5, DPSOFTRAST_ARRAY_TEXCOORD6, ~0}, {GL20TU_COLOR, GL20TU_PANTS, GL20TU_SHIRT, GL20TU_GLOW, GL20TU_NORMAL, GL20TU_GLOSS, ~0}}, {2, DPSOFTRAST_VertexShader_LightSource, DPSOFTRAST_PixelShader_LightSource, {DPSOFTRAST_ARRAY_TEXCOORD0, DPSOFTRAST_ARRAY_TEXCOORD1, DPSOFTRAST_ARRAY_TEXCOORD2, DPSOFTRAST_ARRAY_TEXCOORD3, DPSOFTRAST_ARRAY_TEXCOORD4, ~0}, {GL20TU_COLOR, GL20TU_PANTS, GL20TU_SHIRT, GL20TU_GLOW, GL20TU_NORMAL, GL20TU_GLOSS, GL20TU_CUBE, ~0}}, - {2, DPSOFTRAST_VertexShader_Refraction, DPSOFTRAST_PixelShader_Refraction, {~0}}, + {2, DPSOFTRAST_VertexShader_Refraction, DPSOFTRAST_PixelShader_Refraction, {DPSOFTRAST_ARRAY_TEXCOORD0, DPSOFTRAST_ARRAY_TEXCOORD1, ~0}, {GL20TU_NORMAL, GL20TU_REFRACTION, ~0}}, {2, DPSOFTRAST_VertexShader_Water, DPSOFTRAST_PixelShader_Water, {~0}}, {2, DPSOFTRAST_VertexShader_ShowDepth, DPSOFTRAST_PixelShader_ShowDepth, {~0}}, {2, DPSOFTRAST_VertexShader_DeferredGeometry, DPSOFTRAST_PixelShader_DeferredGeometry, {~0}}, diff --git a/shader_glsl.h b/shader_glsl.h index 65a70d9e..2ec910f0 100644 --- a/shader_glsl.h +++ b/shader_glsl.h @@ -348,15 +348,12 @@ "#ifdef FRAGMENT_SHADER\n" "uniform sampler2D Texture_Normal;\n" "uniform sampler2D Texture_Refraction;\n" -"uniform sampler2D Texture_Reflection;\n" "\n" "uniform mediump vec4 DistortScaleRefractReflect;\n" "uniform mediump vec4 ScreenScaleRefractReflect;\n" "uniform mediump vec4 ScreenCenterRefractReflect;\n" "uniform mediump vec4 RefractColor;\n" "uniform mediump vec4 ReflectColor;\n" -"uniform mediump float ReflectFactor;\n" -"uniform mediump float ReflectOffset;\n" "uniform highp float ClientTime;\n" "#ifdef USENORMALMAPSCROLLBLEND\n" "uniform highp vec2 NormalmapScrollBlend;\n" -- 2.39.2