GL state snapshot - initial structure

- sit between udnerlying es driver and guest
- work with any es backend (angle, swiftshader, etc)
- snapshot clear color as a smoke test

TODO

- plug into rest of snapshot
- snapshot minimum set of GL state necessary to get to home screen

Change-Id: Idf2eb9822d62f9308275ff2df8d12f4402e085c3

3 files changed, 297 insertions, 7 deletions

diff --git a/host/commands/emugen/ApiGen.cpp b/host/commands/emugen/ApiGen.cpp
index b8b871935..0c1d078f3 100644
--- a/host/commands/emugen/ApiGen.cpp
+++ b/host/commands/emugen/ApiGen.cpp
@@ -105,6 +105,23 @@ int ApiGen::genProcTypes(const std::string &filename, SideType side)
             }
         }
         fprintf(fp, ");\n");
+
+        if (side == SERVER_SIDE && e->customDecoder() && !e->notApi()) {
+            fprintf(fp, "typedef ");
+            e->retval().printType(fp);
+            fprintf(fp, " (%s_APIENTRY *%s_dec_%s_proc_t) (", basename, e->name().c_str(), sideString(side));
+
+            VarsArray & evars = e->vars();
+            size_t n = evars.size();
+
+            for (size_t j = 0; j < n; j++) {
+                if (!evars[j].isVoid()) {
+                    if (j != 0) fprintf(fp, ", ");
+                    evars[j].printType(fp);
+                }
+            }
+            fprintf(fp, ");\n");
+        }
     }
     fprintf(fp, "\n\n#endif\n");
     return 0;
@@ -170,7 +187,12 @@ int ApiGen::genContext(const std::string & filename, SideType side)
     // API entry points
     for (size_t i = 0; i < size(); i++) {
         EntryPoint *e = &at(i);
-        fprintf(fp, "\t%s_%s_proc_t %s;\n", e->name().c_str(), sideString(side), e->name().c_str());
+        if (side == SERVER_SIDE && e->customDecoder() && !e->notApi()) {
+            fprintf(fp, "\t%s_dec_%s_proc_t %s;\n", e->name().c_str(), sideString(side), e->name().c_str());
+            fprintf(fp, "\t%s_%s_proc_t %s_dec;\n", e->name().c_str(), sideString(side), e->name().c_str());
+        } else {
+            fprintf(fp, "\t%s_%s_proc_t %s;\n", e->name().c_str(), sideString(side), e->name().c_str());
+        }
     }
 
     // virtual destructor
@@ -889,11 +911,19 @@ int ApiGen::genContextImpl(const std::string &filename, SideType side)
     fprintf(fp, "int %s::initDispatchByName(void *(*getProc)(const char *, void *userData), void *userData)\n{\n", classname.c_str());
     for (size_t i = 0; i < n; i++) {
         EntryPoint *e = &at(i);
-        fprintf(fp, "\t%s = (%s_%s_proc_t) getProc(\"%s\", userData);\n",
-                e->name().c_str(),
-                e->name().c_str(),
-                sideString(side),
-                e->name().c_str());
+        if (e->customDecoder() && !e->notApi()) {
+            fprintf(fp, "\t%s = (%s_dec_%s_proc_t) getProc(\"%s\", userData);\n",
+                    e->name().c_str(),
+                    e->name().c_str(),
+                    sideString(side),
+                    e->name().c_str());
+        } else {
+            fprintf(fp, "\t%s = (%s_%s_proc_t) getProc(\"%s\", userData);\n",
+                    e->name().c_str(),
+                    e->name().c_str(),
+                    sideString(side),
+                    e->name().c_str());
+        }
     }
     fprintf(fp, "\treturn 0;\n");
     fprintf(fp, "}\n\n");
@@ -1035,7 +1065,11 @@ R"(        // Do this on every iteration, as some commands may change the checks
             }
 
             if (pass == PASS_FunctionCall) {
-                fprintf(fp, "\t\t\tthis->%s(", e->name().c_str());
+                if (e->customDecoder() && !e->notApi()) {
+                    fprintf(fp, "\t\t\tthis->%s_dec(", e->name().c_str());
+                } else {
+                    fprintf(fp, "\t\t\tthis->%s(", e->name().c_str());
+                }
                 if (e->customDecoder()) {
                     fprintf(fp, "this"); // add a context to the call
                 }
diff --git a/host/libs/virglrenderer/GLESv1_dec/gles1.attrib b/host/libs/virglrenderer/GLESv1_dec/gles1.attrib
index 8889bd70c..3cbc9d37e 100644
--- a/host/libs/virglrenderer/GLESv1_dec/gles1.attrib
+++ b/host/libs/virglrenderer/GLESv1_dec/gles1.attrib
@@ -102,11 +102,13 @@ glCompressedTexSubImage2D
 
 #void glDeleteBuffers(GLsizei n, GLuint *buffers)
 glDeleteBuffers
+    flag custom_decoder
 	len buffers (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; } 
 
 #void glDeleteTextures(GLsizei n, GLuint *textures)
 glDeleteTextures
+    flag custom_decoder
 	len textures (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; } 
 
@@ -133,12 +135,14 @@ glGetBufferParameteriv
 
 #void glGenBuffers(GLsizei n, GLuint *buffers)
 glGenBuffers
+    flag custom_decoder
 	len buffers (n * sizeof(GLuint))
 	dir buffers out
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; } 
 
 #void glGenTextures(GLsizei n, GLuint *textures)
 glGenTextures
+    flag custom_decoder
 	len textures (n * sizeof(GLuint))
 	dir textures out
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; } 
@@ -473,12 +477,14 @@ glTexParameterxvOES
 
 #void glDeleteRenderbuffersOES(GLsizei n, GLuint *renderbuffers)
 glDeleteRenderbuffersOES
+    flag custom_decoder
 	dir renderbuffers in
 	len renderbuffers (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; } 
 
 #void glGenRenderbuffersOES(GLsizei n, GLuint *renderbuffers)
 glGenRenderbuffersOES
+    flag custom_decoder
 	dir renderbuffers out 
 	len renderbuffers (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; } 
@@ -490,12 +496,14 @@ glGetRenderbufferParameterivOES
 
 #void glDeleteFramebuffersOES(GLsizei n, GLuint *framebuffers)
 glDeleteFramebuffersOES
+    flag custom_decoder
 	dir framebuffers in
 	len framebuffers (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; } 
 
 #void glGenFramebuffersOES(GLsizei n, GLuint *framebuffers)
 glGenFramebuffersOES
+    flag custom_decoder
 	dir framebuffers out
 	len framebuffers (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; } 
@@ -571,12 +579,14 @@ glGetTexGenxvOES
 
 #void glDeleteVertexArraysOES(GLsizei n, const GLuint *arrays)
 glDeleteVertexArraysOES
+    flag custom_decoder
 	dir arrays in
 	len arrays (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; } 
 
 #void glGenVertexArraysOES(GLsizei n, GLuint *arrays)
 glGenVertexArraysOES
+    flag custom_decoder
 	dir arrays out
 	len arrays (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; } 
diff --git a/host/libs/virglrenderer/GLESv3_dec/gles3.attrib b/host/libs/virglrenderer/GLESv3_dec/gles3.attrib
index bc657c582..6b452f409 100644
--- a/host/libs/virglrenderer/GLESv3_dec/gles3.attrib
+++ b/host/libs/virglrenderer/GLESv3_dec/gles3.attrib
@@ -4,6 +4,7 @@ GLOBAL
 
 #void glBindAttribLocation(GLuint program, GLuint index, GLchar *name)
 glBindAttribLocation
+    flag custom_decoder
     len name (strlen(name) + 1)
 
 #void glBufferData(GLenum target, GLsizeiptr size, GLvoid *data, GLenum usage)
@@ -30,23 +31,33 @@ glCompressedTexSubImage2D
     var_flag data nullAllowed isLarge
     param_check imageSize if(imageSize<0){ ctx->setError(GL_INVALID_VALUE); return; }
 
+glDeleteShader
+    flag custom_decoder
+
+glDeleteProgram
+    flag custom_decoder
+
 #void glDeleteBuffers(GLsizei n, GLuint *buffers)
 glDeleteBuffers
+    flag custom_decoder
     len buffers (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; }
 
 #void glDeleteFramebuffers(GLsizei n, GLuint *framebuffers)
 glDeleteFramebuffers
+    flag custom_decoder
     len framebuffers (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; }
 
 #void glDeleteRenderbuffers(GLsizei n, GLuint *renderbuffers)
 glDeleteRenderbuffers
+    flag custom_decoder
     len renderbuffers (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; }
 
 #void glDeleteTextures(GLsizei n, GLuint *textures)
 glDeleteTextures
+    flag custom_decoder
     len textures (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; }
 
@@ -54,26 +65,51 @@ glDeleteTextures
 glDrawElements
     flag unsupported
 
+glCreateShader
+    flag custom_decoder
+
+glCompileShader
+    flag custom_decoder
+
+glAttachShader
+    flag custom_decoder
+
+glDetachShader
+    flag custom_decoder
+
+glIsShader
+    flag custom_decoder
+
+glLinkProgram
+    flag custom_decoder
+
+glCreateProgram
+    flag custom_decoder
+
 #void glGenBuffers(GLsizei n, GLuint *buffers)
 glGenBuffers
+    flag custom_decoder
     len buffers (n * sizeof(GLuint))
     dir buffers out
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; }
 
 #void glGenFramebuffers(GLsizei n, GLuint *framebuffers)
 glGenFramebuffers
+    flag custom_decoder
     len framebuffers (n * sizeof(GLuint))
     dir framebuffers out
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; }
 
 #void glGenRenderbuffers(GLsizei n, GLuint *renderbuffers)
 glGenRenderbuffers
+    flag custom_decoder
     len renderbuffers (n * sizeof(GLuint))
     dir renderbuffers out
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; }
 
 #void glGenTextures(GLsizei n, GLuint *textures)
 glGenTextures
+    flag custom_decoder
     len textures (n * sizeof(GLuint))
     dir textures out
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; }
@@ -150,11 +186,13 @@ glGetIntegerv
 
 #void glGetProgramiv(GLuint program, GLenum pname, GLint *params)
 glGetProgramiv
+    flag custom_decoder
     dir params out
     len params (glUtilsParamSize(pname) * sizeof(GLint))
 
 #void glGetProgramInfoLog(GLuint program, GLsizei bufsize, GLsizei *length, GLchar *infolog)
 glGetProgramInfoLog
+    flag custom_decoder
     dir infolog out
     len infolog bufsize
     param_check bufsize if(bufsize<0){ ctx->setError(GL_INVALID_VALUE); return; }
@@ -170,12 +208,14 @@ glGetRenderbufferParameteriv
 
 #void glGetShaderiv(GLuint shader, GLenum pname, GLint *params)
 glGetShaderiv
+    flag custom_decoder
     dir params out
     len params sizeof(GLint)
 # XXX - might change if pname with value larger then one is added
 
 #void glGetShaderInfoLog(GLuint shader, GLsizei bufsize, GLsizei *length, GLchar *infolog)
 glGetShaderInfoLog
+    flag custom_decoder
     dir length out
     len length (sizeof(GLsizei))
     var_flag length nullAllowed
@@ -192,6 +232,7 @@ glGetShaderPrecisionFormat
 
 #void glGetShaderSource(GLuint shader, GLsizei bufsize, GLsizei *length, GLchar *source)
 glGetShaderSource
+    flag custom_decoder
     dir length out
     len length (sizeof(GLsizei))
     var_flag length nullAllowed
@@ -371,11 +412,13 @@ glCompressedTexSubImage3DOES
 
 #void glDeleteVertexArraysOES(GLsizei n, GLuint *arrays)
 glDeleteVertexArraysOES
+    flag custom_decoder
     len arrays (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; }
 
 #void glGenVertexArraysOES(GLsizei n, GLuint *arrays)
 glGenVertexArraysOES
+    flag custom_decoder
     len arrays (n * sizeof(GLuint))
     dir arrays out
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; }
@@ -605,11 +648,13 @@ glFinishRoundTrip
 # GLES 3.0
 
 glGenVertexArrays
+    flag custom_decoder
     len arrays (n * sizeof(GLuint))
     dir arrays out
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; }
 
 glDeleteVertexArrays
+    flag custom_decoder
     len arrays (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; }
 
@@ -863,11 +908,13 @@ glInvalidateSubFramebuffer
     len attachments (numAttachments * sizeof(GLenum))
 
 glGenTransformFeedbacks
+    flag custom_decoder
     dir ids out
     len ids (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; }
 
 glDeleteTransformFeedbacks
+    flag custom_decoder
     len ids (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; }
 
@@ -896,11 +943,13 @@ glGetTransformFeedbackVarying
     var_flag type nullAllowed
 
 glGenSamplers
+    flag custom_decoder
     dir samplers out
     len samplers (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; }
 
 glDeleteSamplers
+    flag custom_decoder
     len samplers (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; }
 
@@ -919,11 +968,13 @@ glGetSamplerParameteriv
     len params (glUtilsParamSize(pname) * sizeof(GLint))
 
 glGenQueries
+    flag custom_decoder
     dir queries out
     len queries (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; }
 
 glDeleteQueries
+    flag custom_decoder
     len queries (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; }
 
@@ -1011,10 +1062,12 @@ glGetBooleani_v
     len data (sizeof(GLboolean))
 
 glGenProgramPipelines
+    flag custom_decoder
     dir pipelines out
     len pipelines (n * sizeof(GLuint))
 
 glDeleteProgramPipelines
+    flag custom_decoder
     len pipelines (n * sizeof(GLuint))
     param_check n if(n<0){ ctx->setError(GL_INVALID_VALUE); return; }
 
@@ -1167,3 +1220,196 @@ glGetTexLevelParameterfv
 glGetTexLevelParameteriv
     dir params out
     len params (glUtilsParamSize(pname) * sizeof(GLint))
+glUseProgram
+    flag custom_decoder
+
+glValidateProgram
+    flag custom_decoder
+
+glIsProgram
+    flag custom_decoder
+
+glGetActiveAttrib
+    flag custom_decoder
+
+glGetActiveUniform
+    flag custom_decoder
+
+glGetAttachedShaders
+    flag custom_decoder
+
+glGetAttribLocation
+    flag custom_decoder
+
+glGetUniformfv
+    flag custom_decoder
+
+glGetUniformiv
+    flag custom_decoder
+
+glGetUniformLocation
+    flag custom_decoder
+
+glGetProgramBinaryOES
+    flag custom_decoder
+
+glProgramBinaryOES
+    flag custom_decoder
+
+glUniformBlockBinding
+    flag custom_decoder
+
+glGetUniformBlockIndex
+    flag custom_decoder
+
+glGetActiveUniformBlockiv
+    flag custom_decoder
+
+glGetActiveUniformBlockName
+    flag custom_decoder
+
+glGetUniformuiv
+    flag custom_decoder
+
+glGetActiveUniformsiv
+    flag custom_decoder
+
+glTransformFeedbackVaryings
+    flag custom_decoder
+
+glGetTransformFeedbackVarying
+    flag custom_decoder
+
+glProgramParameteri
+    flag custom_decoder
+
+glProgramBinary
+    flag custom_decoder
+
+glGetProgramBinary
+    flag custom_decoder
+
+glGetFragDataLocation
+    flag custom_decoder
+
+glUseProgramStages
+    flag custom_decoder
+
+glActiveShaderProgram
+    flag custom_decoder
+
+glProgramUniform1f
+    flag custom_decoder
+
+glProgramUniform2f
+    flag custom_decoder
+
+glProgramUniform3f
+    flag custom_decoder
+
+glProgramUniform4f
+    flag custom_decoder
+
+glProgramUniform1i
+    flag custom_decoder
+
+glProgramUniform2i
+    flag custom_decoder
+
+glProgramUniform3i
+    flag custom_decoder
+
+glProgramUniform4i
+    flag custom_decoder
+
+glProgramUniform1ui
+    flag custom_decoder
+
+glProgramUniform2ui
+    flag custom_decoder
+
+glProgramUniform3ui
+    flag custom_decoder
+
+glProgramUniform4ui
+    flag custom_decoder
+
+glProgramUniform1fv
+    flag custom_decoder
+
+glProgramUniform2fv
+    flag custom_decoder
+
+glProgramUniform3fv
+    flag custom_decoder
+
+glProgramUniform4fv
+    flag custom_decoder
+
+glProgramUniform1iv
+    flag custom_decoder
+
+glProgramUniform2iv
+    flag custom_decoder
+
+glProgramUniform3iv
+    flag custom_decoder
+
+glProgramUniform4iv
+    flag custom_decoder
+
+glProgramUniform1uiv
+    flag custom_decoder
+
+glProgramUniform2uiv
+    flag custom_decoder
+
+glProgramUniform3uiv
+    flag custom_decoder
+
+glProgramUniform4uiv
+    flag custom_decoder
+
+glProgramUniformMatrix2fv
+    flag custom_decoder
+
+glProgramUniformMatrix3fv
+    flag custom_decoder
+
+glProgramUniformMatrix4fv
+    flag custom_decoder
+
+glProgramUniformMatrix2x3fv
+    flag custom_decoder
+
+glProgramUniformMatrix3x2fv
+    flag custom_decoder
+
+glProgramUniformMatrix2x4fv
+    flag custom_decoder
+
+glProgramUniformMatrix4x2fv
+    flag custom_decoder
+
+glProgramUniformMatrix3x4fv
+    flag custom_decoder
+
+glProgramUniformMatrix4x3fv
+    flag custom_decoder
+
+glGetProgramInterfaceiv
+    flag custom_decoder
+
+glGetProgramResourceiv
+    flag custom_decoder
+
+glGetProgramResourceIndex
+    flag custom_decoder
+
+glGetProgramResourceLocation
+    flag custom_decoder
+
+glGetProgramResourceName
+    flag custom_decoder
+
+