| /* |
| Copyright 2010 Google Inc. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| |
| #include "GrGLConfig.h" |
| |
| #if GR_SUPPORT_GLES2 || GR_SUPPORT_GLDESKTOP |
| |
| #include "GrGpuGLShaders.h" |
| #include "GrGpuVertex.h" |
| #include "GrMemory.h" |
| |
| #define ATTRIBUTE_MATRIX 0 |
| |
| #define ATTRIBUTE_TEXT_COLOR 1 |
| |
| #if ATTRIBUTE_MATRIX |
| #define DECL_MATRIX(name) "attribute mat3 " #name ";\n" |
| #else |
| #define DECL_MATRIX(name) "uniform mat3 " #name ";\n" |
| #endif |
| |
| #define SKIP_CACHE_CHECK true |
| |
| #if GR_SUPPORT_GLES2 |
| #define GR_PRECISION "mediump" |
| #define GR_SHADER_PRECISION "precision mediump float;\n" |
| #else |
| #define GR_PRECISION "" |
| #define GR_SHADER_PRECISION "" |
| #endif |
| |
| static const char* gvshad[] = { |
| // 0: kTextureVertCoords_Program, kTextureVertCoordsProj_Program, |
| // kRadialTextureVertCoords_Program, kSweepTextureVertCoords_Program |
| "attribute vec2 aPosition;\n" |
| "attribute vec4 aColor;\n" |
| "varying vec3 vTexture;\n" |
| "varying vec4 vColor;\n" |
| DECL_MATRIX(viewM) |
| DECL_MATRIX(texM) |
| "void main() {\n" |
| " vec3 pos3 = viewM*vec3(aPosition,1);\n" |
| " gl_Position = vec4(pos3.xy,0,pos3.z);\n" |
| " gl_PointSize = 1.0;\n" |
| " vTexture = texM * vec3(aPosition,1);\n" |
| " vColor = aColor;\n" |
| "}\n", |
| |
| // 1: kTextureTexCoords_Program, kTextureTexCoordsProj_Program, |
| // kRadialTextureTexCoords_Program, kSweepTextureTexCoords_Program |
| "attribute vec2 aPosition;\n" |
| "attribute vec2 aTexture;\n" |
| "attribute vec4 aColor;\n" |
| "varying vec3 vTexture;\n" |
| "varying vec4 vColor;\n" |
| DECL_MATRIX(viewM) |
| DECL_MATRIX(texM) |
| "void main() {\n" |
| " vec3 pos3 = viewM*vec3(aPosition,1);\n" |
| " gl_Position = vec4(pos3.xy,0,pos3.z);\n" |
| " gl_PointSize = 1.0;\n" |
| " vTexture = texM * vec3(aTexture,1);\n" |
| " vColor = aColor;\n" |
| "}\n", |
| |
| // 2: kText_Program |
| "attribute vec2 aPosition;\n" |
| "attribute vec2 aTexture;\n" |
| "varying vec2 vTexture;\n" |
| DECL_MATRIX(viewM) |
| #if ATTRIBUTE_TEXT_COLOR |
| "varying vec4 vColor;\n" |
| "attribute vec4 aColor;\n" |
| #endif |
| "void main() {\n" |
| " vec3 pos3 = viewM*vec3(aPosition,1);\n" |
| " gl_Position = vec4(pos3.xy,0,pos3.z);\n" |
| " vTexture = aTexture;\n" |
| #if ATTRIBUTE_TEXT_COLOR |
| " vColor = aColor;\n" |
| #endif |
| "}\n", |
| |
| // 3: kNoTexture_Program |
| "attribute vec2 aPosition;\n" |
| "attribute vec4 aColor;\n" |
| "varying vec4 vColor;\n" |
| DECL_MATRIX(viewM) |
| "void main() {\n" |
| " vec3 pos3 = viewM*vec3(aPosition,1);\n" |
| " gl_Position = vec4(pos3.xy,0,pos3.z);\n" |
| " gl_PointSize = 1.0;\n" |
| " vColor = aColor;\n" |
| "}\n", |
| |
| // 4: kTextureVertCoordsNoColor_Program |
| "attribute vec2 aPosition;\n" |
| "attribute vec4 aColor;\n" |
| "varying vec3 vTexture;\n" |
| DECL_MATRIX(viewM) |
| DECL_MATRIX(texM) |
| "void main() {\n" |
| " vec3 pos3 = viewM*vec3(aPosition,1);\n" |
| " gl_Position = vec4(pos3.xy,0,pos3.z);\n" |
| " vTexture = texM * vec3(aPosition,1);\n" |
| "}\n", |
| |
| // 5: kTextureTexCoordsNoColor_Program |
| "attribute vec2 aPosition;\n" |
| "attribute vec2 aTexture;\n" |
| "varying vec3 vTexture;\n" |
| DECL_MATRIX(viewM) |
| DECL_MATRIX(texM) |
| "void main() {\n" |
| " vec3 pos3 = viewM*vec3(aPosition,1);\n" |
| " gl_Position = vec4(pos3.xy,0,pos3.z);\n" |
| " gl_PointSize = 1.0;\n" |
| " vTexture = texM * vec3(aTexture,1);\n" |
| "}\n", |
| |
| // 6: kTwoPointRadialTextureVertCoords_Program |
| "uniform " GR_PRECISION " float uParams[6];\n" |
| // 0 is t^2 term of quadratic |
| // 1 is one-half the inverse of above |
| // 2 is x offset of the second circle (post tex-matrix) |
| // 3 is the radius of the first circle (post tex-matrix) |
| // 4 is the first circle radius squared |
| // 5 is 1 to use + in the quadratic eq or -1 to use - |
| DECL_MATRIX(viewM) |
| DECL_MATRIX(texM) |
| "attribute vec2 aPosition;\n" |
| "attribute vec4 aColor;\n" |
| "varying vec4 vColor;\n" |
| "varying float vB;\n" // t coeffecient of quadratic. |
| "varying vec2 t;\n" // coordinates in canonical space |
| "void main() {\n" |
| " vec3 pos3 = viewM*vec3(aPosition,1);\n" |
| " gl_Position = vec4(pos3.xy,0,pos3.z);\n" |
| " t = vec2(texM * vec3(aPosition,1));\n" |
| " vColor = aColor;\n" |
| " vB = 2.0 * (uParams[2] * t.x - uParams[3]);\n" |
| "}\n", |
| |
| // 6: kTwoPointRadialTextureVertCoords_Program |
| "uniform " GR_PRECISION " float uParams[6];\n" |
| DECL_MATRIX(viewM) |
| DECL_MATRIX(texM) |
| "attribute vec2 aPosition;\n" |
| "attribute vec2 aTexture;\n" |
| "attribute vec4 aColor;\n" |
| "varying vec4 vColor;\n" |
| "varying float vB;\n" // t coeffecient of quadratic. |
| "varying vec2 t;\n" // coordinates in canonical space |
| "void main() {\n" |
| " vec3 pos3 = viewM*vec3(aPosition,1);\n" |
| " gl_Position = vec4(pos3.xy,0,pos3.z);\n" |
| " t = vec2(texM * vec3(aTexture,1));\n" |
| " vColor = aColor;\n" |
| " vB = 2.0 * (uParams[2] * t.x - uParams[3]);\n" |
| "}\n", |
| }; |
| |
| static const char* gfshad[] = { |
| // 0: kTextureVertCoords_Program, kTextureTexCoords_Program |
| GR_SHADER_PRECISION |
| "varying vec3 vTexture;\n" |
| "varying vec4 vColor;\n" |
| "uniform sampler2D sTexture;\n" |
| "void main() {\n" |
| " gl_FragColor = vColor * texture2D(sTexture, vTexture.xy);\n" |
| "}\n", |
| |
| // 1: kTextureVertCoordsProj_Program, kTextureTexCoordsProj_Program |
| GR_SHADER_PRECISION |
| "varying vec3 vTexture;\n" |
| "varying vec4 vColor;\n" |
| "uniform sampler2D sTexture;\n" |
| "void main() {\n" |
| // On Brian's PC laptop with Intel Gfx texture2DProj seems to be broken |
| // but it works everywhere else tested. |
| " gl_FragColor = vColor * texture2DProj(sTexture, vTexture);\n" |
| |
| "}\n", |
| |
| // 2: kText_Program |
| GR_SHADER_PRECISION |
| "varying vec2 vTexture;\n" |
| #if ATTRIBUTE_TEXT_COLOR |
| "varying vec4 vColor;\n" |
| #else |
| "uniform vec4 uColor;\n" |
| #endif |
| "uniform sampler2D sTexture;\n" |
| "void main() {\n" |
| #if ATTRIBUTE_TEXT_COLOR |
| " gl_FragColor = vColor * texture2D(sTexture, vTexture).a;\n" |
| #else |
| " gl_FragColor = uColor * texture2D(sTexture, vTexture).a;\n" |
| #endif |
| "}\n", |
| |
| // 3: kNoTexture_Program |
| GR_SHADER_PRECISION |
| "varying vec4 vColor;\n" |
| "void main() {\n" |
| " gl_FragColor = vColor;\n" |
| "}\n", |
| |
| // 4: kTextureVertCoordsNoColor_Program |
| GR_SHADER_PRECISION |
| "varying vec3 vTexture;\n" |
| "uniform sampler2D sTexture;\n" |
| "void main() {\n" |
| " gl_FragColor = texture2D(sTexture, vTexture.xy);\n" |
| "}\n", |
| |
| // 5: kRadialTextureVertCoords_Program, kRadialTextureTexCoords_Program |
| GR_SHADER_PRECISION |
| "varying vec3 vTexture;\n" |
| "varying vec4 vColor;\n" |
| "uniform sampler2D sTexture;\n" |
| "void main() {\n" |
| " gl_FragColor = vColor * texture2D(sTexture, vec2(length(vTexture.xy), 0.5));\n" |
| "}\n", |
| |
| // 6: kSweepTextureVertCoords_Program, kSweepTextureTexCoords_Program |
| GR_SHADER_PRECISION |
| "varying vec3 vTexture;\n" |
| "varying vec4 vColor;\n" |
| "uniform sampler2D sTexture;\n" |
| "void main() {\n" |
| " vec2 t = vec2(atan(-vTexture.y, -vTexture.x)*0.1591549430918 + 0.5,\n" |
| " 0.5);\n" |
| " gl_FragColor = vColor * texture2D(sTexture, t);\n" |
| "}\n", |
| |
| // 7: kTwoPointRadialTextureVertCoords_Program, kTwoPointRadialTextureTexCoords_Program |
| GR_SHADER_PRECISION |
| "varying vec4 vColor;\n" |
| "varying float vB;\n" // t coeffecient of quadratic. |
| "varying vec2 t;\n" // coordinates in canonical radial gradient space |
| "uniform sampler2D sTexture;\n" |
| "uniform float uParams[6];\n" |
| "void main() {\n" |
| "float c = t.x*t.x + t.y*t.y - uParams[4];\n" |
| "float ac4 = uParams[0] * c * 4.0;\n" |
| "float root = sqrt(abs(vB * vB - ac4));\n" |
| "float t = (-vB + uParams[5] * root) * uParams[1];\n" |
| "gl_FragColor = vColor * texture2D(sTexture, vec2(t,0.5))\n;" |
| "}\n", |
| }; |
| |
| // determines which frag/vert shaders are used for each program in Programs enum |
| |
| static const struct { |
| int fVShaderIdx; |
| int fFShaderIdx; |
| bool fHasTexMatrix; |
| bool fHasTexCoords; |
| bool fTwoPointRadial; |
| GrGpuGLShaders::ColorType fColorType; |
| } gProgramLoadData[] = { |
| // kTextureVertCoords_Program |
| {0, 0, true, false, false, GrGpuGLShaders::kAttrib_ColorType }, |
| // kTextureVertCoordsProj_Program |
| {0, 1, true, false, false, GrGpuGLShaders::kAttrib_ColorType }, |
| // kTextureTexCoords_Program |
| {1, 0, true, true, false, GrGpuGLShaders::kAttrib_ColorType }, |
| // kTextureTexCoordsProj_Program |
| {1, 1, true, true, false, GrGpuGLShaders::kAttrib_ColorType }, |
| // kTextureVertCoordsNoColor_Program |
| {4, 4, true, false, false, GrGpuGLShaders::kNone_ColorType }, |
| // kTextureTexCoordsNoColor_Program |
| {5, 4, true, false, false, GrGpuGLShaders::kNone_ColorType }, |
| // kText_Program |
| #if ATTRIBUTE_TEXT_COLOR |
| {2, 2, false, true, false, GrGpuGLShaders::kAttrib_ColorType }, |
| #else |
| {2, 2, false, true, false, GrGpuGLShaders::kUniform_ColorType }, |
| #endif |
| // kRadialTextureVertCoords_Program |
| {0, 5, true, false, false, GrGpuGLShaders::kAttrib_ColorType }, |
| // kRadialTextureTexCoords_Program |
| {1, 5, true, true, false, GrGpuGLShaders::kAttrib_ColorType }, |
| // kSweepTextureVertCoords_Program |
| {0, 6, true, false, false, GrGpuGLShaders::kAttrib_ColorType }, |
| // kSweepTextureTexCoords_Program |
| {1, 6, true, true, false, GrGpuGLShaders::kAttrib_ColorType }, |
| // kTwoPointRadialTextureVertCoords_Program |
| {6, 7, true, false, true, GrGpuGLShaders::kAttrib_ColorType }, |
| // kTwoPointRadialTextureTexCoords_Program |
| {7, 7, true, true, true, GrGpuGLShaders::kAttrib_ColorType }, |
| // kNoTexture_Program |
| {3, 3, false, false, false, GrGpuGLShaders::kAttrib_ColorType }, |
| }; |
| |
| #define GR_GL_POS_ATTR_LOCATION 0 |
| #define GR_GL_TEX_ATTR_LOCATION 1 |
| #define GR_GL_COL_ATTR_LOCATION 2 |
| #if ATTRIBUTE_MATRIX |
| #define GR_GL_MAT_ATTR_LOCATION 3 |
| #define GR_GL_TEXMAT_ATTR_LOCATION 6 |
| #endif |
| |
| GLuint GrGpuGLShaders::loadShader(GLenum type, const char* src) { |
| GLuint shader = GR_GL(CreateShader(type)); |
| if (0 == shader) { |
| return 0; |
| } |
| |
| GR_GL(ShaderSource(shader, 1, &src, NULL)); |
| GR_GL(CompileShader(shader)); |
| |
| GLint compiled = GR_GL_INIT_ZERO; |
| GR_GL(GetShaderiv(shader, GL_COMPILE_STATUS, &compiled)); |
| |
| if (!compiled) { |
| GLint infoLen = GR_GL_INIT_ZERO; |
| GR_GL(GetShaderiv(shader, GL_INFO_LOG_LENGTH, &infoLen)); |
| GrAutoMalloc log(sizeof(char)*(infoLen+1)); // outside if for debugger |
| if (infoLen > 0) { |
| GR_GL(GetShaderInfoLog(shader, infoLen+1, NULL, (char*)log.get())); |
| GrPrintf((char*)log.get()); |
| } |
| GrAssert(!"Shader compilation failed!"); |
| GR_GL(DeleteShader(shader)); |
| return 0; |
| } |
| return shader; |
| } |
| |
| bool GrGpuGLShaders::createProgram(GLuint vshader, GLuint fshader, |
| bool hasTexMatrix, |
| bool hasTexCoords, |
| GrGpuGLShaders::ColorType colorType, |
| bool twoPointRadial, |
| ProgramData* program) { |
| program->fProgramID = GR_GL(CreateProgram()); |
| program->fVShaderID = vshader; |
| program->fFShaderID = fshader; |
| |
| GrAssert(0 != program->fProgramID); |
| |
| GR_GL(AttachShader(program->fProgramID, vshader)); |
| GR_GL(AttachShader(program->fProgramID, fshader)); |
| |
| GR_GL(BindAttribLocation(program->fProgramID, |
| GR_GL_POS_ATTR_LOCATION, |
| "aPosition")); |
| if (hasTexCoords) { |
| GR_GL(BindAttribLocation(program->fProgramID, |
| GR_GL_TEX_ATTR_LOCATION, |
| "aTexture")); |
| } |
| #if ATTRIBUTE_MATRIX |
| if (hasTexMatrix) { |
| GR_GL(BindAttribLocation(program->fProgramID, |
| GR_GL_TEXMAT_ATTR_LOCATION, |
| "texM")); |
| // set to something arbitrary to signal to flush that program |
| // uses the texture matrix. |
| program->fTexMatrixLocation = 1000; |
| } |
| #endif |
| if (colorType == kAttrib_ColorType) { |
| GR_GL(BindAttribLocation(program->fProgramID, |
| GR_GL_COL_ATTR_LOCATION, |
| "aColor")); |
| } |
| #if ATTRIBUTE_MATRIX |
| GR_GL(BindAttribLocation(program->fProgramID, |
| GR_GL_MAT_ATTR_LOCATION, |
| "viewM")); |
| #endif |
| |
| GR_GL(LinkProgram(program->fProgramID)); |
| |
| GLint linked = GR_GL_INIT_ZERO; |
| GR_GL(GetProgramiv(program->fProgramID, GL_LINK_STATUS, &linked)); |
| if (!linked) { |
| GLint infoLen = GR_GL_INIT_ZERO; |
| GR_GL(GetProgramiv(program->fProgramID, GL_INFO_LOG_LENGTH, &infoLen)); |
| GrAutoMalloc log(sizeof(char)*(infoLen+1)); // outside if for debugger |
| if (infoLen > 0) { |
| GR_GL(GetProgramInfoLog(program->fProgramID, |
| infoLen+1, |
| NULL, |
| (char*)log.get())); |
| GrPrintf((char*)log.get()); |
| } |
| GrAssert(!"Error linking program"); |
| GR_GL(DeleteProgram(program->fProgramID)); |
| program->fProgramID = 0; |
| return false; |
| } |
| program->fColorType = colorType; |
| |
| #if !ATTRIBUTE_MATRIX |
| program->fMatrixLocation = |
| GR_GL(GetUniformLocation(program->fProgramID, "viewM")); |
| program->fTexMatrixLocation = |
| GR_GL(GetUniformLocation(program->fProgramID, "texM")); |
| #endif |
| program->fColorLocation = |
| GR_GL(GetUniformLocation(program->fProgramID, "uColor")); |
| program->fTwoPointParamsLocation = |
| GR_GL(GetUniformLocation(program->fProgramID, "uParams")); |
| |
| GLint samplerLocation = |
| GR_GL(GetUniformLocation(program->fProgramID, "sTexture")); |
| |
| #if !ATTRIBUTE_MATRIX |
| if (-1 == program->fMatrixLocation) { |
| GrAssert(!"Cannot find matrix uniform in program"); |
| GR_GL(DeleteProgram(program->fProgramID)); |
| program->fProgramID = 0; |
| return false; |
| } |
| #endif |
| |
| bool hasTexture = hasTexCoords || hasTexMatrix; |
| |
| if (-1 == samplerLocation && hasTexture) { |
| GrAssert(!"Expected to find texture sampler"); |
| GR_GL(DeleteProgram(program->fProgramID)); |
| program->fProgramID = 0; |
| return false; |
| } else if (-1 != samplerLocation && !hasTexture) { |
| GrAssert(!"unexpectedly found texture sampler"); |
| } |
| #if !ATTRIBUTE_MATRIX && !defined(GR_SKIP_2POINTRADIAL_PROGRAMS) |
| if (-1 == program->fTexMatrixLocation && hasTexMatrix) { |
| GrAssert(!"Expected to find texture matrix"); |
| GR_GL(DeleteProgram(program->fProgramID)); |
| program->fProgramID = 0; |
| return false; |
| } else if (-1 != program->fTexMatrixLocation && !hasTexMatrix) { |
| GrAssert(!"unexpectedly found texture matrix"); |
| } |
| #endif |
| |
| if (-1 == program->fColorLocation && |
| (kUniform_ColorType == colorType)) { |
| GR_GL(DeleteProgram(program->fProgramID)); |
| program->fProgramID = 0; |
| return false; |
| } else if (-1 != program->fColorLocation && |
| (kUniform_ColorType != colorType)) { |
| GrAssert(!"Unexpectedly found color uniform"); |
| } |
| |
| if (twoPointRadial) { |
| if (-1 == program->fTwoPointParamsLocation) { |
| GrAssert(!"Didn't find expected uniform for 2pt radial gradient"); |
| GR_GL(DeleteProgram(program->fProgramID)); |
| program->fProgramID = 0; |
| return false; |
| } |
| } else { |
| GrAssert(-1 == program->fTwoPointParamsLocation); |
| } |
| |
| GR_GL(UseProgram(program->fProgramID)); |
| if (-1 != samplerLocation) { |
| GR_GL(Uniform1i(samplerLocation, 0)); |
| } |
| |
| return true; |
| } |
| |
| GrGpuGLShaders::GrGpuGLShaders() { |
| |
| resetContextHelper(); |
| |
| GLuint vshadIDs[GR_ARRAY_COUNT(gvshad)]; |
| for (size_t s = 0; s < GR_ARRAY_COUNT(gvshad); ++s) { |
| vshadIDs[s] = loadShader(GL_VERTEX_SHADER, gvshad[s]); |
| } |
| |
| GLuint fshadIDs[GR_ARRAY_COUNT(gfshad)]; |
| for (size_t s = 0; s < GR_ARRAY_COUNT(gfshad); ++s) { |
| fshadIDs[s] = loadShader(GL_FRAGMENT_SHADER, gfshad[s]); |
| } |
| |
| GR_STATIC_ASSERT(kProgramCount == GR_ARRAY_COUNT(gProgramLoadData)); |
| for (int p = 0; p < kProgramCount; ++p) { |
| #ifdef GR_SKIP_2POINTRADIAL_PROGRAMS |
| if (11 == p || 12 == p) continue; |
| #endif |
| GR_DEBUGCODE(bool result = ) |
| createProgram(vshadIDs[gProgramLoadData[p].fVShaderIdx], |
| fshadIDs[gProgramLoadData[p].fFShaderIdx], |
| gProgramLoadData[p].fHasTexMatrix, |
| gProgramLoadData[p].fHasTexCoords, |
| gProgramLoadData[p].fColorType, |
| gProgramLoadData[p].fTwoPointRadial, |
| &fPrograms[p]); |
| GR_DEBUGASSERT(result); |
| |
| fPrograms[p].fViewMatrix.setScale(GR_ScalarMax, GR_ScalarMax); |
| for (int s = 0; s < kNumStages; ++s) { |
| fPrograms[p].fTextureMatrices[s].setScale(GR_ScalarMax, |
| GR_ScalarMax); // illegal |
| }; |
| fPrograms[p].fColor = GrColor_ILLEGAL; |
| fPrograms[p].fTextureOrientation = (GrGLTexture::Orientation)-1; // illegal |
| |
| // these aren't strictly invalid, just really unlikely. |
| fPrograms[p].fRadial2CenterX1 = GR_ScalarMin; |
| fPrograms[p].fRadial2Radius0 = GR_ScalarMin; |
| fPrograms[p].fRadial2PosRoot = true; // arbitrary |
| } |
| } |
| |
| GrGpuGLShaders::~GrGpuGLShaders() { |
| // shaders get deleted once for each program that uses them, do we care? |
| // probably not |
| for (int i = 0; i < kProgramCount; ++i) { |
| GR_GL(DeleteProgram(fPrograms[i].fProgramID)); |
| GR_GL(DeleteShader(fPrograms[i].fVShaderID)); |
| GR_GL(DeleteShader(fPrograms[i].fFShaderID)); |
| } |
| } |
| |
| void GrGpuGLShaders::resetContext() { |
| INHERITED::resetContext(); |
| resetContextHelper(); |
| } |
| |
| void GrGpuGLShaders::resetContextHelper() { |
| fHWProgram = (Programs)-1; |
| fTextureOrientation = (GrGLTexture::Orientation)-1; // illegal |
| |
| fHWGeometryState.fVertexLayout = 0; |
| fHWGeometryState.fVertexOffset = ~0; |
| GR_GL(DisableVertexAttribArray(GR_GL_COL_ATTR_LOCATION)); |
| GR_GL(DisableVertexAttribArray(GR_GL_TEX_ATTR_LOCATION)); |
| GR_GL(EnableVertexAttribArray(GR_GL_POS_ATTR_LOCATION)); |
| } |
| |
| |
| void GrGpuGLShaders::flushMatrix(GLint location) { |
| GrAssert(NULL != fCurrDrawState.fRenderTarget); |
| GrMatrix m ( |
| GrIntToScalar(2) / fCurrDrawState.fRenderTarget->width(), 0, -GR_Scalar1, |
| 0,-GrIntToScalar(2) / fCurrDrawState.fRenderTarget->height(), GR_Scalar1, |
| 0, 0, GrMatrix::I()[8]); |
| m.setConcat(m, fCurrDrawState.fViewMatrix); |
| |
| // ES doesn't allow you to pass true to the transpose param, |
| // so do our own transpose |
| GrScalar mt[] = { |
| m[GrMatrix::kScaleX], |
| m[GrMatrix::kSkewY], |
| m[GrMatrix::kPersp0], |
| m[GrMatrix::kSkewX], |
| m[GrMatrix::kScaleY], |
| m[GrMatrix::kPersp1], |
| m[GrMatrix::kTransX], |
| m[GrMatrix::kTransY], |
| m[GrMatrix::kPersp2] |
| }; |
| #if ATTRIBUTE_MATRIX |
| GR_GL(VertexAttrib4fv(GR_GL_MAT_ATTR_LOCATION+0, mt+0)); |
| GR_GL(VertexAttrib4fv(GR_GL_MAT_ATTR_LOCATION+1, mt+3)); |
| GR_GL(VertexAttrib4fv(GR_GL_MAT_ATTR_LOCATION+2, mt+6)); |
| #else |
| GR_GL(UniformMatrix3fv(location,1,false,mt)); |
| #endif |
| } |
| |
| void GrGpuGLShaders::flushTexMatrix(GLint location, |
| GrGLTexture::Orientation orientation) { |
| GrMatrix* m; |
| GrMatrix temp; |
| if (GrGLTexture::kBottomUp_Orientation == orientation) { |
| temp.setAll( |
| GR_Scalar1, 0, 0, |
| 0, -GR_Scalar1, GR_Scalar1, |
| 0, 0, GrMatrix::I()[8] |
| ); |
| temp.preConcat(fCurrDrawState.fTextureMatrices[0]); |
| m = &temp; |
| } else { |
| GrAssert(GrGLTexture::kTopDown_Orientation == orientation); |
| m = &fCurrDrawState.fTextureMatrices[0]; |
| } |
| |
| // ES doesn't allow you to pass true to the transpose param, |
| // so do our own transpose |
| GrScalar mt[] = { |
| (*m)[GrMatrix::kScaleX], |
| (*m)[GrMatrix::kSkewY], |
| (*m)[GrMatrix::kPersp0], |
| (*m)[GrMatrix::kSkewX], |
| (*m)[GrMatrix::kScaleY], |
| (*m)[GrMatrix::kPersp1], |
| (*m)[GrMatrix::kTransX], |
| (*m)[GrMatrix::kTransY], |
| (*m)[GrMatrix::kPersp2] |
| }; |
| #if ATTRIBUTE_MATRIX |
| GR_GL(VertexAttrib4fv(GR_GL_TEXMAT_ATTR_LOCATION+0, mt+0)); |
| GR_GL(VertexAttrib4fv(GR_GL_TEXMAT_ATTR_LOCATION+1, mt+3)); |
| GR_GL(VertexAttrib4fv(GR_GL_TEXMAT_ATTR_LOCATION+2, mt+6)); |
| #else |
| GR_GL(UniformMatrix3fv(location,1,false,mt)); |
| #endif |
| } |
| |
| void GrGpuGLShaders::flushTwoPointRadial(GLint paramsLocation, |
| const GrSamplerState& state) { |
| GrScalar centerX1 = state.getRadial2CenterX1(); |
| GrScalar radius0 = state.getRadial2Radius0(); |
| |
| GrScalar a = GrMul(centerX1, centerX1) - GR_Scalar1; |
| |
| float unis[6] = { |
| GrScalarToFloat(a), |
| 1 / (2.f * unis[0]), |
| GrScalarToFloat(centerX1), |
| GrScalarToFloat(radius0), |
| GrScalarToFloat(GrMul(radius0, radius0)), |
| state.isRadial2PosRoot() ? 1.f : -1.f |
| }; |
| GR_GL(Uniform1fv(paramsLocation, 6, unis)); |
| } |
| |
| void GrGpuGLShaders::flushProgram(PrimitiveType type) { |
| |
| Programs nextProgram = kNoTexture_Program; |
| |
| GrTexture* texture = fCurrDrawState.fTextures[0]; |
| bool posAsTex = |
| !!(StagePosAsTexCoordVertexLayoutBit(0) & fGeometrySrc.fVertexLayout); |
| |
| if (!VertexUsesStage(0, fGeometrySrc.fVertexLayout)) { |
| goto HAVE_NEXT_PROGRAM; |
| } |
| |
| GrAssert(NULL != texture); |
| |
| switch (fCurrDrawState.fSamplerStates[0].getSampleMode()) { |
| case GrSamplerState::kRadial_SampleMode: |
| GrAssert(!fCurrDrawState.fTextureMatrices[0].hasPerspective()); |
| GrAssert(GrTexture::kAlpha_8_PixelConfig != texture->config()); |
| if (posAsTex) { |
| nextProgram = kRadialTextureVertCoords_Program; |
| } else { |
| nextProgram = kRadialTextureTexCoords_Program; |
| } |
| break; |
| case GrSamplerState::kSweep_SampleMode: |
| GrAssert(!fCurrDrawState.fTextureMatrices[0].hasPerspective()); |
| GrAssert(GrTexture::kAlpha_8_PixelConfig != texture->config()); |
| if (posAsTex) { |
| nextProgram = kSweepTextureVertCoords_Program; |
| } else { |
| nextProgram = kSweepTextureTexCoords_Program; |
| } |
| break; |
| case GrSamplerState::kRadial2_SampleMode: |
| GrAssert(!fCurrDrawState.fTextureMatrices[0].hasPerspective()); |
| GrAssert(GrTexture::kAlpha_8_PixelConfig != texture->config()); |
| if (posAsTex) { |
| nextProgram = kTwoPointRadialTextureVertCoords_Program; |
| } else { |
| nextProgram = kTwoPointRadialTextureTexCoords_Program; |
| } |
| break; |
| case GrSamplerState::kNormal_SampleMode: |
| if (GrTexture::kAlpha_8_PixelConfig == texture->config()) { |
| GrAssert(((GrGLTexture*)texture)->orientation() == |
| GrGLTexture::kTopDown_Orientation); |
| GrAssert(!posAsTex); |
| nextProgram = kText_Program; |
| } else { |
| bool persp = fCurrDrawState.fTextureMatrices[0].hasPerspective(); |
| if (posAsTex) { |
| nextProgram = persp ? kTextureVertCoordsProj_Program : |
| kTextureVertCoords_Program; |
| } else { |
| nextProgram = persp ? kTextureTexCoordsProj_Program : |
| kTextureTexCoords_Program; |
| } |
| // check for case when frag shader can skip the color modulation |
| if (!persp && !(fGeometrySrc.fVertexLayout |
| & kColor_VertexLayoutBit) && |
| 0xffffffff == fCurrDrawState.fColor) { |
| switch (nextProgram) { |
| case kTextureVertCoords_Program: |
| nextProgram = kTextureVertCoordsNoColor_Program; |
| break; |
| case kTextureTexCoords_Program: |
| nextProgram = kTextureTexCoordsNoColor_Program; |
| break; |
| default: |
| GrAssert("Unexpected"); |
| break; |
| } |
| } |
| } |
| break; |
| default: |
| GrAssert(!"Unknown samplemode"); |
| break; |
| } |
| |
| HAVE_NEXT_PROGRAM: |
| if (fHWProgram != nextProgram) { |
| GR_GL(UseProgram(fPrograms[nextProgram].fProgramID)); |
| fHWProgram = nextProgram; |
| #if GR_COLLECT_STATS |
| ++fStats.fProgChngCnt; |
| #endif |
| } |
| } |
| |
| bool GrGpuGLShaders::flushGraphicsState(PrimitiveType type) { |
| |
| for (int s = 1; s < kNumStages; ++s) { |
| if (VertexUsesStage(s, fGeometrySrc.fVertexLayout)) { |
| unimpl("the hard-coded shaders used by this " |
| "class only support 1 stage"); |
| return false; |
| } |
| } |
| |
| if (!flushGLStateCommon(type)) { |
| return false; |
| } |
| |
| if (fRenderTargetChanged) { |
| // our coords are in pixel space and the GL matrices map to NDC |
| // so if the viewport changed, our matrix is now wrong. |
| #if ATTRIBUTE_MATRIX |
| fHWDrawState.fViewMatrix.setScale(GR_ScalarMax, GR_ScalarMax); |
| #else |
| // we assume all shader matrices may be wrong after viewport changes |
| for (int p = 0; p < kProgramCount; ++p) { |
| // set to illegal matrix |
| fPrograms[p].fViewMatrix.setScale(GR_ScalarMax, GR_ScalarMax); |
| } |
| #endif |
| fRenderTargetChanged = false; |
| } |
| |
| flushProgram(type); |
| |
| if (fGeometrySrc.fVertexLayout & kColor_VertexLayoutBit) { |
| // invalidate the immediate mode color |
| fHWDrawState.fColor = GrColor_ILLEGAL; |
| } else { |
| // if we don't have per-vert colors either set the color attr |
| // or color uniform (depending on which program). |
| if (-1 != fPrograms[fHWProgram].fColorLocation) { |
| GrAssert(kUniform_ColorType == fPrograms[fHWProgram].fColorType); |
| if (fPrograms[fHWProgram].fColor != fCurrDrawState.fColor) { |
| float c[] = { |
| GrColorUnpackR(fCurrDrawState.fColor) / 255.f, |
| GrColorUnpackG(fCurrDrawState.fColor) / 255.f, |
| GrColorUnpackB(fCurrDrawState.fColor) / 255.f, |
| GrColorUnpackA(fCurrDrawState.fColor) / 255.f |
| }; |
| GR_GL(Uniform4fv(fPrograms[fHWProgram].fColorLocation, 1, c)); |
| fPrograms[fHWProgram].fColor = fCurrDrawState.fColor; |
| } |
| } else if (kAttrib_ColorType == fPrograms[fHWProgram].fColorType && |
| fHWDrawState.fColor != fCurrDrawState.fColor) { |
| // OpenGL ES only supports the float varities of glVertexAttrib |
| float c[] = { |
| GrColorUnpackR(fCurrDrawState.fColor) / 255.f, |
| GrColorUnpackG(fCurrDrawState.fColor) / 255.f, |
| GrColorUnpackB(fCurrDrawState.fColor) / 255.f, |
| GrColorUnpackA(fCurrDrawState.fColor) / 255.f |
| }; |
| GR_GL(VertexAttrib4fv(GR_GL_COL_ATTR_LOCATION, c)); |
| fHWDrawState.fColor = fCurrDrawState.fColor; |
| } |
| } |
| |
| #if ATTRIBUTE_MATRIX |
| GrMatrix& currentViewMatrix = fHWDrawState.fViewMatrix; |
| GrMatrix& currentTexMatrix = fHWDrawState.fTextureMatrices[0]; |
| GrGLTexture::Orientation& orientation = fTextureOrientation; |
| #else |
| GrMatrix& currentViewMatrix = fPrograms[fHWProgram].fViewMatrix; |
| GrMatrix& currentTexMatrix = fPrograms[fHWProgram].fTextureMatrices[0]; |
| GrGLTexture::Orientation& orientation = |
| fPrograms[fHWProgram].fTextureOrientation; |
| #endif |
| |
| if (currentViewMatrix != |
| fCurrDrawState.fViewMatrix) { |
| flushMatrix(fPrograms[fHWProgram].fMatrixLocation); |
| currentViewMatrix = fCurrDrawState.fViewMatrix; |
| } |
| |
| GrGLTexture* texture = (GrGLTexture*) fCurrDrawState.fTextures[0]; |
| if (NULL != texture) { |
| if (-1 != fPrograms[fHWProgram].fTexMatrixLocation && |
| (currentTexMatrix != fCurrDrawState.fTextureMatrices[0] || |
| orientation != texture->orientation())) { |
| flushTexMatrix(fPrograms[fHWProgram].fTexMatrixLocation, |
| texture->orientation()); |
| currentTexMatrix = fCurrDrawState.fTextureMatrices[0]; |
| orientation = texture->orientation(); |
| } |
| } |
| |
| const GrSamplerState& sampler = fCurrDrawState.fSamplerStates[0]; |
| if (-1 != fPrograms[fHWProgram].fTwoPointParamsLocation && |
| (fPrograms[fHWProgram].fRadial2CenterX1 != sampler.getRadial2CenterX1() || |
| fPrograms[fHWProgram].fRadial2Radius0 != sampler.getRadial2Radius0() || |
| fPrograms[fHWProgram].fRadial2PosRoot != sampler.isRadial2PosRoot())) { |
| |
| flushTwoPointRadial(fPrograms[fHWProgram].fTwoPointParamsLocation, |
| sampler); |
| fPrograms[fHWProgram].fRadial2CenterX1 = sampler.getRadial2CenterX1(); |
| fPrograms[fHWProgram].fRadial2Radius0 = sampler.getRadial2Radius0(); |
| fPrograms[fHWProgram].fRadial2PosRoot = sampler.isRadial2PosRoot(); |
| } |
| |
| return true; |
| } |
| |
| void GrGpuGLShaders::setupGeometry(int* startVertex, |
| int* startIndex, |
| int vertexCount, |
| int indexCount) { |
| |
| int newColorOffset; |
| int newTexCoordOffsets[kNumStages]; |
| |
| GLsizei newStride = VertexSizeAndOffsetsByStage(fGeometrySrc.fVertexLayout, |
| newTexCoordOffsets, |
| &newColorOffset); |
| int oldColorOffset; |
| int oldTexCoordOffsets[kNumStages]; |
| GLsizei oldStride = VertexSizeAndOffsetsByStage(fHWGeometryState.fVertexLayout, |
| oldTexCoordOffsets, |
| &oldColorOffset); |
| bool indexed = NULL == startIndex; |
| |
| int extraVertexOffset; |
| int extraIndexOffset; |
| setBuffers(indexed, &extraVertexOffset, &extraIndexOffset); |
| |
| GLenum scalarType; |
| bool texCoordNorm; |
| if (fGeometrySrc.fVertexLayout & kTextFormat_VertexLayoutBit) { |
| scalarType = GrGLTextType; |
| texCoordNorm = GR_GL_TEXT_TEXTURE_NORMALIZED; |
| } else { |
| scalarType = GrGLType; |
| texCoordNorm = false; |
| } |
| |
| size_t vertexOffset = (*startVertex + extraVertexOffset) * newStride; |
| *startVertex = 0; |
| if (indexed) { |
| *startIndex += extraIndexOffset; |
| } |
| |
| // all the Pointers must be set if any of these are true |
| bool allOffsetsChange = fHWGeometryState.fArrayPtrsDirty || |
| vertexOffset != fHWGeometryState.fVertexOffset || |
| newStride != oldStride; |
| |
| // position and tex coord offsets change if above conditions are true |
| // or the type/normalization changed based on text vs nontext type coords. |
| bool posAndTexChange = allOffsetsChange || |
| (((GrGLTextType != GrGLType) || GR_GL_TEXT_TEXTURE_NORMALIZED) && |
| (kTextFormat_VertexLayoutBit & |
| (fHWGeometryState.fVertexLayout ^ |
| fGeometrySrc.fVertexLayout))); |
| |
| if (posAndTexChange) { |
| GR_GL(VertexAttribPointer(GR_GL_POS_ATTR_LOCATION, 2, scalarType, |
| false, newStride, (GLvoid*)vertexOffset)); |
| fHWGeometryState.fVertexOffset = vertexOffset; |
| } |
| |
| // this class only supports one stage. |
| if (newTexCoordOffsets[0] > 0) { |
| GLvoid* texCoordOffset = (GLvoid*)(vertexOffset + newTexCoordOffsets[0]); |
| if (oldTexCoordOffsets[0] <= 0) { |
| GR_GL(EnableVertexAttribArray(GR_GL_TEX_ATTR_LOCATION)); |
| GR_GL(VertexAttribPointer(GR_GL_TEX_ATTR_LOCATION, 2, scalarType, |
| texCoordNorm, newStride, texCoordOffset)); |
| } else if (posAndTexChange || |
| newTexCoordOffsets[0] != oldTexCoordOffsets[0]) { |
| GR_GL(VertexAttribPointer(GR_GL_TEX_ATTR_LOCATION, 2, scalarType, |
| texCoordNorm, newStride, texCoordOffset)); |
| } |
| } else if (oldTexCoordOffsets[0] > 0) { |
| GR_GL(DisableVertexAttribArray(GR_GL_TEX_ATTR_LOCATION)); |
| } |
| |
| if (newColorOffset > 0) { |
| GLvoid* colorOffset = (GLvoid*)(vertexOffset + newColorOffset); |
| if (oldColorOffset <= 0) { |
| GR_GL(EnableVertexAttribArray(GR_GL_COL_ATTR_LOCATION)); |
| GR_GL(VertexAttribPointer(GR_GL_COL_ATTR_LOCATION, 4, |
| GL_UNSIGNED_BYTE, |
| true, newStride, colorOffset)); |
| } else if (allOffsetsChange || newColorOffset != oldColorOffset) { |
| GR_GL(VertexAttribPointer(GR_GL_COL_ATTR_LOCATION, 4, |
| GL_UNSIGNED_BYTE, |
| true, newStride, colorOffset)); |
| } |
| } else if (oldColorOffset > 0) { |
| GR_GL(DisableVertexAttribArray(GR_GL_COL_ATTR_LOCATION)); |
| } |
| |
| fHWGeometryState.fVertexLayout = fGeometrySrc.fVertexLayout; |
| fHWGeometryState.fArrayPtrsDirty = false; |
| } |
| #endif |