static void CreateShaders()
{
static const char *fragShaderText =
"#ifdef GL_ES\n"
"precision highp float;\n"
"#endif\n"
"varying vec2 TexCoordOut;\n"
"uniform sampler2D Texture;\n"
"void main() {\n"
" gl_FragColor = texture2D(Texture, TexCoordOut);\n"
"}\n";
static const char *vertShaderText =
"#ifdef GL_ES\n"
"precision highp float;\n"
"#endif\n"
"attribute vec4 pos;\n"
"attribute vec2 TexCoordIn;\n "
"varying vec2 TexCoordOut;\n "
"void main() {\n"
" gl_Position = pos;\n"
" TexCoordOut = TexCoordIn;\n"
"}\n";
program = OpenGL_CompileProgram(vertShaderText, fragShaderText);
glUseProgram(program);
uni_tex = glGetUniformLocation(program, "Texture");
attr_pos = glGetAttribLocation(program, "pos");
attr_tex = glGetAttribLocation(program, "TexCoordIn");
}
SoftGPU::SoftGPU()
{
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glPixelStorei(GL_UNPACK_ALIGNMENT, 4); // 4-byte pixel alignment
glGenTextures(1, &temp_texture);
// TODO: Use highp for GLES
static const char *fragShaderText =
#ifdef USING_GLES2
"#version 100\n"
#endif
"varying vec2 TexCoordOut;\n"
"uniform sampler2D Texture;\n"
"void main() {\n"
" vec4 tmpcolor;\n"
" tmpcolor = texture2D(Texture, TexCoordOut);\n"
" gl_FragColor = tmpcolor;\n"
"}\n";
static const char *vertShaderText =
#ifdef USING_GLES2
"#version 100\n"
#endif
"attribute vec4 pos;\n"
"attribute vec2 TexCoordIn;\n "
"varying vec2 TexCoordOut;\n "
"void main() {\n"
" gl_Position = pos;\n"
" TexCoordOut = TexCoordIn;\n"
"}\n";
program = OpenGL_CompileProgram(vertShaderText, fragShaderText);
glUseProgram(program);
uni_tex = glGetUniformLocation(program, "Texture");
attr_pos = glGetAttribLocation(program, "pos");
attr_tex = glGetAttribLocation(program, "TexCoordIn");
if (gl_extensions.ARB_vertex_array_object) {
glGenVertexArrays(1, &vao);
glGenBuffers(1, &vbuf);
}
fb.data = Memory::GetPointer(0x44000000); // TODO: correct default address?
depthbuf.data = Memory::GetPointer(0x44000000); // TODO: correct default address?
framebufferDirty_ = true;
// TODO: Is there a default?
displayFramebuf_ = 0;
displayStride_ = 512;
displayFormat_ = GE_FORMAT_8888;
}
void SWOGLWindow::Prepare()
{
if (m_init)
return;
m_init = true;
// Init extension support.
if (!GLExtensions::Init())
{
ERROR_LOG(VIDEO, "GLExtensions::Init failed!Does your video card support OpenGL 2.0?");
return;
}
else if (GLExtensions::Version() < 310)
{
ERROR_LOG(VIDEO, "OpenGL Version %d detected, but at least 3.1 is required.",
GLExtensions::Version());
return;
}
std::string frag_shader = "in vec2 TexCoord;\n"
"out vec4 ColorOut;\n"
"uniform sampler2D Texture;\n"
"void main() {\n"
" ColorOut = texture2D(Texture, TexCoord);\n"
"}\n";
std::string vertex_shader = "out vec2 TexCoord;\n"
"void main() {\n"
" vec2 rawpos = vec2(gl_VertexID & 1, (gl_VertexID & 2) >> 1);\n"
" gl_Position = vec4(rawpos * 2.0 - 1.0, 0.0, 1.0);\n"
" TexCoord = vec2(rawpos.x, -rawpos.y);\n"
"}\n";
std::string header = GLInterface->GetMode() == GLInterfaceMode::MODE_OPENGL ?
"#version 140\n" :
"#version 300 es\n"
"precision highp float;\n";
m_image_program = OpenGL_CompileProgram(header + vertex_shader, header + frag_shader);
glUseProgram(m_image_program);
glUniform1i(glGetUniformLocation(m_image_program, "Texture"), 0);
glGenTextures(1, &m_image_texture);
glBindTexture(GL_TEXTURE_2D, m_image_texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glGenVertexArrays(1, &m_image_vao);
}
SoftGPU::SoftGPU()
{
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glPixelStorei(GL_UNPACK_ALIGNMENT, 4); // 4-byte pixel alignment
glGenTextures(1, &temp_texture);
// TODO: Use highp for GLES
static const char *fragShaderText =
"varying vec2 TexCoordOut;\n"
"uniform sampler2D Texture;\n"
"void main() {\n"
" vec4 tmpcolor;\n"
" tmpcolor = texture2D(Texture, TexCoordOut);\n"
" gl_FragColor = tmpcolor;\n"
"}\n";
static const char *vertShaderText =
"attribute vec4 pos;\n"
"attribute vec2 TexCoordIn;\n "
"varying vec2 TexCoordOut;\n "
"void main() {\n"
" gl_Position = pos;\n"
" TexCoordOut = TexCoordIn;\n"
"}\n";
program = OpenGL_CompileProgram(vertShaderText, fragShaderText);
glUseProgram(program);
uni_tex = glGetUniformLocation(program, "Texture");
attr_pos = glGetAttribLocation(program, "pos");
attr_tex = glGetAttribLocation(program, "TexCoordIn");
fb = Memory::GetPointer(0x44000000); // TODO: correct default address?
depthbuf = Memory::GetPointer(0x44000000); // TODO: correct default address?
}