michael@0: /*
michael@0:  * Copyright 2013 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #include "GrGLNoOpInterface.h"
michael@0: #include "SkString.h"
michael@0: #include "SkThread.h"
michael@0: 
michael@0: // the OpenGLES 2.0 spec says this must be >= 128
michael@0: static const GrGLint kDefaultMaxVertexUniformVectors = 128;
michael@0: 
michael@0: // the OpenGLES 2.0 spec says this must be >=16
michael@0: static const GrGLint kDefaultMaxFragmentUniformVectors = 16;
michael@0: 
michael@0: // the OpenGLES 2.0 spec says this must be >= 8
michael@0: static const GrGLint kDefaultMaxVertexAttribs = 8;
michael@0: 
michael@0: // the OpenGLES 2.0 spec says this must be >= 8
michael@0: static const GrGLint kDefaultMaxVaryingVectors = 8;
michael@0: 
michael@0: static const char* kExtensions[] = {
michael@0:     "GL_ARB_framebuffer_object",
michael@0:     "GL_ARB_blend_func_extended",
michael@0:     "GL_ARB_timer_query",
michael@0:     "GL_ARB_draw_buffers",
michael@0:     "GL_ARB_occlusion_query",
michael@0:     "GL_EXT_blend_color",
michael@0:     "GL_EXT_stencil_wrap"
michael@0: };
michael@0: 
michael@0: namespace {
michael@0: const GrGLubyte* combined_extensions_string() {
michael@0:     static SkString gExtString;
michael@0:     static SkMutex gMutex;
michael@0:     gMutex.acquire();
michael@0:     if (0 == gExtString.size()) {
michael@0:         for (size_t i = 0; i < GR_ARRAY_COUNT(kExtensions) - 1; ++i) {
michael@0:             gExtString.append(kExtensions[i]);
michael@0:             gExtString.append(" ");
michael@0:         }
michael@0:         gExtString.append(kExtensions[GR_ARRAY_COUNT(kExtensions) - 1]);
michael@0:     }
michael@0:     gMutex.release();
michael@0:     return (const GrGLubyte*) gExtString.c_str();
michael@0: }
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLBlendColor(GrGLclampf red,
michael@0:                                               GrGLclampf green,
michael@0:                                               GrGLclampf blue,
michael@0:                                               GrGLclampf alpha) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLBindFragDataLocation(GrGLuint program,
michael@0:                                                         GrGLuint colorNumber,
michael@0:                                                         const GrGLchar* name) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLBlendFunc(GrGLenum sfactor,
michael@0:                                               GrGLenum dfactor) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLBufferSubData(GrGLenum target,
michael@0:                                                  GrGLintptr offset,
michael@0:                                                  GrGLsizeiptr size,
michael@0:                                                  const GrGLvoid* data) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLClear(GrGLbitfield mask) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLClearColor(GrGLclampf red,
michael@0:                                               GrGLclampf green,
michael@0:                                               GrGLclampf blue,
michael@0:                                               GrGLclampf alpha) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLClearStencil(GrGLint s) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLColorMask(GrGLboolean red,
michael@0:                                              GrGLboolean green,
michael@0:                                              GrGLboolean blue,
michael@0:                                              GrGLboolean alpha) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLCompileShader(GrGLuint shader) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLCompressedTexImage2D(GrGLenum target,
michael@0:                                                         GrGLint level,
michael@0:                                                         GrGLenum internalformat,
michael@0:                                                         GrGLsizei width,
michael@0:                                                         GrGLsizei height,
michael@0:                                                         GrGLint border,
michael@0:                                                         GrGLsizei imageSize,
michael@0:                                                         const GrGLvoid* data) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLCopyTexSubImage2D(GrGLenum target,
michael@0:                                                      GrGLint level,
michael@0:                                                      GrGLint xoffset,
michael@0:                                                      GrGLint yoffset,
michael@0:                                                      GrGLint x,
michael@0:                                                      GrGLint y,
michael@0:                                                      GrGLsizei width,
michael@0:                                                      GrGLsizei height) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLCullFace(GrGLenum mode) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDepthMask(GrGLboolean flag) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDisable(GrGLenum cap) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDisableVertexAttribArray(GrGLuint index) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDrawArrays(GrGLenum mode,
michael@0:                                               GrGLint first,
michael@0:                                               GrGLsizei count) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDrawBuffer(GrGLenum mode) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDrawBuffers(GrGLsizei n,
michael@0:                                                const GrGLenum* bufs) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDrawElements(GrGLenum mode,
michael@0:                                                 GrGLsizei count,
michael@0:                                                 GrGLenum type,
michael@0:                                                 const GrGLvoid* indices) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLEnable(GrGLenum cap) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLEnableVertexAttribArray(GrGLuint index) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLEndQuery(GrGLenum target) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLFinish() {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLFlush() {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLFrontFace(GrGLenum mode) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLLineWidth(GrGLfloat width) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLLinkProgram(GrGLuint program) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLLoadIdentity() {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLLoadMatrixf(const GrGLfloat*) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLMatrixMode(GrGLenum) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLQueryCounter(GrGLuint id, GrGLenum target) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLReadBuffer(GrGLenum src) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLScissor(GrGLint x,
michael@0:                                            GrGLint y,
michael@0:                                            GrGLsizei width,
michael@0:                                            GrGLsizei height) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLShaderSource(GrGLuint shader,
michael@0:                                                 GrGLsizei count,
michael@0: #if GR_GL_USE_NEW_SHADER_SOURCE_SIGNATURE
michael@0:                                                 const char* const * str,
michael@0: #else
michael@0:                                                 const char** str,
michael@0: #endif
michael@0:                                                 const GrGLint* length) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLStencilFunc(GrGLenum func, GrGLint ref, GrGLuint mask) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLStencilFuncSeparate(GrGLenum face,
michael@0:                                                        GrGLenum func,
michael@0:                                                        GrGLint ref,
michael@0:                                                        GrGLuint mask) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLStencilMask(GrGLuint mask) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLStencilMaskSeparate(GrGLenum face, GrGLuint mask) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLStencilOp(GrGLenum fail, GrGLenum zfail, GrGLenum zpass) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLStencilOpSeparate(GrGLenum face,
michael@0:                                                      GrGLenum fail,
michael@0:                                                      GrGLenum zfail,
michael@0:                                                      GrGLenum zpass) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLTexGenf(GrGLenum, GrGLenum, float) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLTexGenfv(GrGLenum, GrGLenum, const float*) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLTexGeni(GrGLenum, GrGLenum, GrGLint) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLTexImage2D(GrGLenum target,
michael@0:                                               GrGLint level,
michael@0:                                               GrGLint internalformat,
michael@0:                                               GrGLsizei width,
michael@0:                                               GrGLsizei height,
michael@0:                                               GrGLint border,
michael@0:                                               GrGLenum format,
michael@0:                                               GrGLenum type,
michael@0:                                               const GrGLvoid* pixels) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLTexParameteri(GrGLenum target,
michael@0:                                                  GrGLenum pname,
michael@0:                                                  GrGLint param) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLTexParameteriv(GrGLenum target,
michael@0:                                                   GrGLenum pname,
michael@0:                                                   const GrGLint* params) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLTexStorage2D(GrGLenum target,
michael@0:                                                 GrGLsizei levels,
michael@0:                                                 GrGLenum internalformat,
michael@0:                                                 GrGLsizei width,
michael@0:                                                 GrGLsizei height) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDiscardFramebuffer(GrGLenum target,
michael@0:                                                       GrGLsizei numAttachments,
michael@0:                                                       const GrGLenum* attachments) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLTexSubImage2D(GrGLenum target,
michael@0:                                                  GrGLint level,
michael@0:                                                  GrGLint xoffset,
michael@0:                                                  GrGLint yoffset,
michael@0:                                                  GrGLsizei width,
michael@0:                                                  GrGLsizei height,
michael@0:                                                  GrGLenum format,
michael@0:                                                  GrGLenum type,
michael@0:                                                  const GrGLvoid* pixels) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLUniform1f(GrGLint location, GrGLfloat v0) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLUniform1i(GrGLint location, GrGLint v0) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLUniform1fv(GrGLint location,
michael@0:                                               GrGLsizei count,
michael@0:                                               const GrGLfloat* v) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLUniform1iv(GrGLint location,
michael@0:                                               GrGLsizei count,
michael@0:                                               const GrGLint* v) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLUniform2f(GrGLint location, GrGLfloat v0, GrGLfloat v1) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLUniform2i(GrGLint location, GrGLint v0, GrGLint v1) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLUniform2fv(GrGLint location,
michael@0:                                               GrGLsizei count,
michael@0:                                               const GrGLfloat* v) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLUniform2iv(GrGLint location,
michael@0:                                               GrGLsizei count,
michael@0:                                               const GrGLint* v) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLUniform3f(GrGLint location,
michael@0:                                               GrGLfloat v0,
michael@0:                                               GrGLfloat v1,
michael@0:                                               GrGLfloat v2) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLUniform3i(GrGLint location,
michael@0:                                               GrGLint v0,
michael@0:                                               GrGLint v1,
michael@0:                                               GrGLint v2) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLUniform3fv(GrGLint location,
michael@0:                                               GrGLsizei count,
michael@0:                                               const GrGLfloat* v) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLUniform3iv(GrGLint location,
michael@0:                                               GrGLsizei count,
michael@0:                                               const GrGLint* v) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLUniform4f(GrGLint location,
michael@0:                                               GrGLfloat v0,
michael@0:                                               GrGLfloat v1,
michael@0:                                               GrGLfloat v2,
michael@0:                                               GrGLfloat v3) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLUniform4i(GrGLint location,
michael@0:                                               GrGLint v0,
michael@0:                                               GrGLint v1,
michael@0:                                               GrGLint v2,
michael@0:                                               GrGLint v3) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLUniform4fv(GrGLint location,
michael@0:                                               GrGLsizei count,
michael@0:                                               const GrGLfloat* v) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLUniform4iv(GrGLint location,
michael@0:                                               GrGLsizei count,
michael@0:                                               const GrGLint* v) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLUniformMatrix2fv(GrGLint location,
michael@0:                                                     GrGLsizei count,
michael@0:                                                     GrGLboolean transpose,
michael@0:                                                     const GrGLfloat* value) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLUniformMatrix3fv(GrGLint location,
michael@0:                                                     GrGLsizei count,
michael@0:                                                     GrGLboolean transpose,
michael@0:                                                     const GrGLfloat* value) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLUniformMatrix4fv(GrGLint location,
michael@0:                                                     GrGLsizei count,
michael@0:                                                     GrGLboolean transpose,
michael@0:                                                     const GrGLfloat* value) {
michael@0: }
michael@0: 
michael@0:  GrGLvoid GR_GL_FUNCTION_TYPE noOpGLVertexAttrib4fv(GrGLuint indx, const GrGLfloat* values) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLVertexAttribPointer(GrGLuint indx,
michael@0:                                                        GrGLint size,
michael@0:                                                        GrGLenum type,
michael@0:                                                        GrGLboolean normalized,
michael@0:                                                        GrGLsizei stride,
michael@0:                                                        const GrGLvoid* ptr) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLViewport(GrGLint x,
michael@0:                                             GrGLint y,
michael@0:                                             GrGLsizei width,
michael@0:                                             GrGLsizei height) {
michael@0: }
michael@0: 
michael@0:   GrGLvoid GR_GL_FUNCTION_TYPE noOpGLGetFramebufferAttachmentParameteriv(GrGLenum target,
michael@0:                                                                          GrGLenum attachment,
michael@0:                                                                          GrGLenum pname,
michael@0:                                                                          GrGLint* params) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLGetRenderbufferParameteriv(GrGLenum target,
michael@0:                                                               GrGLenum pname,
michael@0:                                                               GrGLint* params) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLRenderbufferStorage(GrGLenum target,
michael@0:                                                        GrGLenum internalformat,
michael@0:                                                        GrGLsizei width,
michael@0:                                                        GrGLsizei height) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLRenderbufferStorageMultisample(GrGLenum target,
michael@0:                                                                   GrGLsizei samples,
michael@0:                                                                   GrGLenum internalformat,
michael@0:                                                                   GrGLsizei width,
michael@0:                                                                   GrGLsizei height) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLBlitFramebuffer(GrGLint srcX0,
michael@0:                                                    GrGLint srcY0,
michael@0:                                                    GrGLint srcX1,
michael@0:                                                    GrGLint srcY1,
michael@0:                                                    GrGLint dstX0,
michael@0:                                                    GrGLint dstY0,
michael@0:                                                    GrGLint dstX1,
michael@0:                                                    GrGLint dstY1,
michael@0:                                                    GrGLbitfield mask,
michael@0:                                                    GrGLenum filter) {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLResolveMultisampleFramebuffer() {
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLBindFragDataLocationIndexed(GrGLuint program,
michael@0:                                                                GrGLuint colorNumber,
michael@0:                                                                GrGLuint index,
michael@0:                                                                const GrGLchar * name) {
michael@0: }
michael@0: 
michael@0: GrGLenum GR_GL_FUNCTION_TYPE noOpGLCheckFramebufferStatus(GrGLenum target) {
michael@0: 
michael@0:     GrAlwaysAssert(GR_GL_FRAMEBUFFER == target);
michael@0: 
michael@0:     return GR_GL_FRAMEBUFFER_COMPLETE;
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLGenIds(GrGLsizei n, GrGLuint* ids) {
michael@0:     static int gCurrID = 1;
michael@0:     for (int i = 0; i < n; ++i) {
michael@0:         ids[i] = ++gCurrID;
michael@0:    }
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDeleteIds(GrGLsizei n, const GrGLuint* ids) {
michael@0: }
michael@0: 
michael@0: GrGLenum GR_GL_FUNCTION_TYPE noOpGLGetError() {
michael@0:     return GR_GL_NO_ERROR;
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLGetIntegerv(GrGLenum pname, GrGLint* params) {
michael@0:     // TODO: remove from Ganesh the #defines for gets we don't use.
michael@0:     // We would like to minimize gets overall due to performance issues
michael@0:     switch (pname) {
michael@0:         case GR_GL_CONTEXT_PROFILE_MASK:
michael@0:             *params = GR_GL_CONTEXT_COMPATIBILITY_PROFILE_BIT;
michael@0:             break;
michael@0:         case GR_GL_STENCIL_BITS:
michael@0:             *params = 8;
michael@0:             break;
michael@0:         case GR_GL_SAMPLES:
michael@0:             *params = 1;
michael@0:             break;
michael@0:         case GR_GL_FRAMEBUFFER_BINDING:
michael@0:             *params = 0;
michael@0:             break;
michael@0:         case GR_GL_VIEWPORT:
michael@0:             params[0] = 0;
michael@0:             params[1] = 0;
michael@0:             params[2] = 800;
michael@0:             params[3] = 600;
michael@0:             break;
michael@0:         case GR_GL_MAX_TEXTURE_IMAGE_UNITS:
michael@0:             *params = 8;
michael@0:             break;
michael@0:         case GR_GL_MAX_TEXTURE_COORDS:
michael@0:             *params = 8;
michael@0:             break;
michael@0:         case GR_GL_MAX_VERTEX_UNIFORM_VECTORS:
michael@0:             *params = kDefaultMaxVertexUniformVectors;
michael@0:             break;
michael@0:         case GR_GL_MAX_FRAGMENT_UNIFORM_VECTORS:
michael@0:             *params = kDefaultMaxFragmentUniformVectors;
michael@0:             break;
michael@0:         case GR_GL_MAX_FRAGMENT_UNIFORM_COMPONENTS:
michael@0:             *params = 16 * 4;
michael@0:             break;
michael@0:         case GR_GL_NUM_COMPRESSED_TEXTURE_FORMATS:
michael@0:             *params = 0;
michael@0:             break;
michael@0:         case GR_GL_COMPRESSED_TEXTURE_FORMATS:
michael@0:             break;
michael@0:         case GR_GL_MAX_TEXTURE_SIZE:
michael@0:             *params = 8192;
michael@0:             break;
michael@0:         case GR_GL_MAX_RENDERBUFFER_SIZE:
michael@0:             *params = 8192;
michael@0:             break;
michael@0:         case GR_GL_MAX_SAMPLES:
michael@0:             *params = 32;
michael@0:             break;
michael@0:         case GR_GL_MAX_VERTEX_ATTRIBS:
michael@0:             *params = kDefaultMaxVertexAttribs;
michael@0:             break;
michael@0:         case GR_GL_MAX_VARYING_VECTORS:
michael@0:             *params = kDefaultMaxVaryingVectors;
michael@0:             break;
michael@0:         case GR_GL_NUM_EXTENSIONS:
michael@0:             *params = GR_ARRAY_COUNT(kExtensions);
michael@0:             break;
michael@0:         default:
michael@0:             GrCrash("Unexpected pname to GetIntegerv");
michael@0:    }
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLGetInfoLog(GrGLuint program,
michael@0:                                               GrGLsizei bufsize,
michael@0:                                               GrGLsizei* length,
michael@0:                                               char* infolog) {
michael@0:     if (length) {
michael@0:         *length = 0;
michael@0:    }
michael@0:     if (bufsize > 0) {
michael@0:         *infolog = 0;
michael@0:    }
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLGetShaderOrProgramiv(GrGLuint program,
michael@0:                                                         GrGLenum pname,
michael@0:                                                         GrGLint* params) {
michael@0:     switch (pname) {
michael@0:         case GR_GL_LINK_STATUS:  // fallthru
michael@0:         case GR_GL_COMPILE_STATUS:
michael@0:             *params = GR_GL_TRUE;
michael@0:             break;
michael@0:         case GR_GL_INFO_LOG_LENGTH:
michael@0:             *params = 0;
michael@0:             break;
michael@0:         // we don't expect any other pnames
michael@0:         default:
michael@0:             GrCrash("Unexpected pname to GetProgramiv");
michael@0:             break;
michael@0:    }
michael@0: }
michael@0: 
michael@0: namespace {
michael@0: template <typename T>
michael@0: void query_result(GrGLenum GLtarget, GrGLenum pname, T *params) {
michael@0:     switch (pname) {
michael@0:         case GR_GL_QUERY_RESULT_AVAILABLE:
michael@0:             *params = GR_GL_TRUE;
michael@0:             break;
michael@0:         case GR_GL_QUERY_RESULT:
michael@0:             *params = 0;
michael@0:             break;
michael@0:         default:
michael@0:             GrCrash("Unexpected pname passed to GetQueryObject.");
michael@0:             break;
michael@0:    }
michael@0: }
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLGetQueryiv(GrGLenum GLtarget,
michael@0:                                               GrGLenum pname,
michael@0:                                               GrGLint *params) {
michael@0:     switch (pname) {
michael@0:         case GR_GL_CURRENT_QUERY:
michael@0:             *params = 0;
michael@0:             break;
michael@0:         case GR_GL_QUERY_COUNTER_BITS:
michael@0:             *params = 32;
michael@0:             break;
michael@0:         default:
michael@0:             GrCrash("Unexpected pname passed GetQueryiv.");
michael@0:    }
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLGetQueryObjecti64v(GrGLuint id,
michael@0:                                                       GrGLenum pname,
michael@0:                                                       GrGLint64 *params) {
michael@0:     query_result(id, pname, params);
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLGetQueryObjectiv(GrGLuint id,
michael@0:                                                     GrGLenum pname,
michael@0:                                                     GrGLint *params) {
michael@0:     query_result(id, pname, params);
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLGetQueryObjectui64v(GrGLuint id,
michael@0:                                                        GrGLenum pname,
michael@0:                                                        GrGLuint64 *params) {
michael@0:     query_result(id, pname, params);
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLGetQueryObjectuiv(GrGLuint id,
michael@0:                                                      GrGLenum pname,
michael@0:                                                      GrGLuint *params) {
michael@0:     query_result(id, pname, params);
michael@0: }
michael@0: 
michael@0: const GrGLubyte* GR_GL_FUNCTION_TYPE noOpGLGetString(GrGLenum name) {
michael@0:     switch (name) {
michael@0:         case GR_GL_EXTENSIONS:
michael@0:             return combined_extensions_string();
michael@0:         case GR_GL_VERSION:
michael@0:             return (const GrGLubyte*)"4.0 Debug GL";
michael@0:         case GR_GL_SHADING_LANGUAGE_VERSION:
michael@0:             return (const GrGLubyte*)"4.20.8 Debug GLSL";
michael@0:         case GR_GL_VENDOR:
michael@0:             return (const GrGLubyte*)"Debug Vendor";
michael@0:         case GR_GL_RENDERER:
michael@0:             return (const GrGLubyte*)"The Debug (Non-)Renderer";
michael@0:         default:
michael@0:             GrCrash("Unexpected name passed to GetString");
michael@0:             return NULL;
michael@0:    }
michael@0: }
michael@0: 
michael@0: const GrGLubyte* GR_GL_FUNCTION_TYPE noOpGLGetStringi(GrGLenum name, GrGLuint i) {
michael@0:     switch (name) {
michael@0:         case GR_GL_EXTENSIONS:
michael@0:             if (static_cast<size_t>(i) <= GR_ARRAY_COUNT(kExtensions)) {
michael@0:                 return (const GrGLubyte*) kExtensions[i];
michael@0:             } else {
michael@0:                 return NULL;
michael@0:             }
michael@0:         default:
michael@0:             GrCrash("Unexpected name passed to GetStringi");
michael@0:             return NULL;
michael@0:     }
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLGetTexLevelParameteriv(GrGLenum target,
michael@0:                                                           GrGLint level,
michael@0:                                                           GrGLenum pname,
michael@0:                                                           GrGLint* params) {
michael@0:     // we used to use this to query stuff about externally created textures,
michael@0:     // now we just require clients to tell us everything about the texture.
michael@0:     GrCrash("Should never query texture parameters.");
michael@0: }
michael@0: 
michael@0: GrGLint GR_GL_FUNCTION_TYPE noOpGLGetUniformLocation(GrGLuint program, const char* name) {
michael@0:     static int gUniLocation = 0;
michael@0:     return ++gUniLocation;
michael@0: }
michael@0: 
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLInsertEventMarker(GrGLsizei length, const char* marker) {
michael@0: }
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLPushGroupMarker(GrGLsizei length  , const char* marker) {
michael@0: }
michael@0: GrGLvoid GR_GL_FUNCTION_TYPE noOpGLPopGroupMarker() {
michael@0: }