static inline Eina_Bool
_program_build(E3D_Program *program, const char *vert_src, const char *frag_src)
{
GLint ok;
/* Create OpenGL vertex & fragment shader object. */
program->vert = glCreateShader(GL_VERTEX_SHADER);
program->frag = glCreateShader(GL_FRAGMENT_SHADER);
/* Commpile vertex shader. */
if (!_shader_compile(program->vert, vert_src))
{
ERR("Faield to compile vertex shader.");
return EINA_FALSE;
}
/* Compile fragment shader. */
if (!_shader_compile(program->frag, frag_src))
{
ERR("Failed to compile fragment shader.");
return EINA_FALSE;
}
/* Create OpenGL program object. */
program->prog = glCreateProgram();
/* Attach shaders. */
glAttachShader(program->prog, program->vert);
glAttachShader(program->prog, program->frag);
/* Link program. */
glLinkProgram(program->prog);
/* Check link status. */
glGetProgramiv(program->prog, GL_LINK_STATUS, &ok);
if (!ok)
{
GLchar *log_str;
GLint len;
GLsizei info_len;
glGetProgramiv(program->prog, GL_INFO_LOG_LENGTH, &len);
log_str = (GLchar *)malloc(len);
glGetProgramInfoLog(program->prog, len, &info_len, log_str);
ERR("Shader link failed.\n%s", log_str);
free(log_str);
return EINA_FALSE;
}
return EINA_TRUE;
}
Shader_t *shader_load(const char *aVertSrc, const char *aFragSrc)
{
Shader_t *out = obj_create_autoreleased(&Class_Shader);
out->activationCallback = NULL;
out->deactivationCallback = NULL;
for(int i = 0; i < kShader_MaxUniforms; ++i) out->uniforms[i] = -1;
for(int i = 0; i < kShader_MaxAttributes; ++i) out->attributes[i] = -1;
out->program = glCreateProgram();
bool success;
GLuint vertexShader = _shader_compile(aVertSrc, GL_VERTEX_SHADER, &success);
dynamo_assert(success, "Couldn't compile vertex shader");
GLuint fragmentShader = _shader_compile(aFragSrc, GL_FRAGMENT_SHADER, &success);
dynamo_assert(success, "Couldn't compile fragment shader");
glAttachShader(out->program, vertexShader);
out->vertexShader = vertexShader;
glAttachShader(out->program, fragmentShader);
out->fragmentShader = fragmentShader;
success = _shader_link(out->program);
glError()
dynamo_assert(success, "Couldn't link shader program");
// Hook up the default uniforms&attributes if available
out->uniforms[kShader_worldMatrixUniform] = shader_getUniformLocation(out, kShader_UniformNames[kShader_worldMatrixUniform]);
out->uniforms[kShader_projectionMatrixUniform] = shader_getUniformLocation(out, kShader_UniformNames[kShader_projectionMatrixUniform]);
out->uniforms[kShader_colormap0Uniform] = shader_getUniformLocation(out, kShader_UniformNames[kShader_colormap0Uniform]);
out->attributes[kShader_positionAttribute] = shader_getAttributeLocation(out, kShader_AttributeNames[kShader_positionAttribute]);
out->attributes[kShader_texCoord0Attribute] = shader_getAttributeLocation(out, kShader_AttributeNames[kShader_texCoord0Attribute]);
return out;
}
