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fix OpenGL initialization in SDL app

This commit is contained in:
Vadim Lopatin 2015-03-17 13:40:07 +03:00
parent d4def4cadd
commit 903fafc590
2 changed files with 57 additions and 17 deletions
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47
src/dlangui/graphics/glsupport.d
View File

@ -21,10 +21,11 @@ module dlangui.graphics.glsupport;
version(USE_OPENGL):
import dlangui.core.logger;
private import derelict.opengl3.gl3;
private import dlangui.core.types;
private import std.conv;
private import std.string;
import derelict.opengl3.gl3;
import dlangui.core.types;
import std.conv;
import std.string;
import std.array;
// utility function to fill 4-float array of vertex colors with converted CR 32bit color
private void LVGLFillColor(uint color, float * buf, int count) {
@ -78,24 +79,28 @@ class GLProgram {
protected bool initialized;
protected bool error;
protected string glslversion;
protected int glslversionInt;
protected char[] glslversionString;
this() {
}
private void compatibilityFixes(ref char[] code) {
if (glslversionInt < 150)
code = replace(code, " texture(", " texture2D(");
}
private GLuint compileShader(string src, GLuint type) {
import core.stdc.stdlib;
import std.string;
char[] versionLine;
versionLine ~= "#version ";
foreach(ch; glslversion) {
if (ch >= '0' && ch <= '9')
versionLine ~= ch;
else if (ch != '.')
break;
}
versionLine ~= "\n\n";
char[] sourceCode = versionLine ~ src;
char[] sourceCode;
sourceCode ~= "#version ";
sourceCode ~= glslversionString;
sourceCode ~= "\n";
sourceCode ~= src;
compatibilityFixes(sourceCode);
Log.d("compileShader glsl=", glslversion, " type:", (type == GL_VERTEX_SHADER ? "GL_VERTEX_SHADER" : (type == GL_FRAGMENT_SHADER ? "GL_FRAGMENT_SHADER" : "UNKNOWN")), " code:\n", sourceCode);
GLuint shader = glCreateShader(type);//GL_VERTEX_SHADER
const char * psrc = sourceCode.toStringz;
GLuint len = cast(uint)sourceCode.length;
@ -120,8 +125,20 @@ class GLProgram {
return 0;
}
}
bool compile() {
glslversion = std.string.fromStringz(glGetString(GL_SHADING_LANGUAGE_VERSION)).dup;
glslversionString.length = 0;
glslversionInt = 0;
foreach(ch; glslversion) {
if (ch >= '0' && ch <= '9') {
glslversionString ~= ch;
glslversionInt = glslversionInt * 10 + (ch - '0');
} else if (ch != '.')
break;
}
vertexShader = compileShader(vertexSource, GL_VERTEX_SHADER);
fragmentShader = compileShader(fragmentSource, GL_FRAGMENT_SHADER);
if (!vertexShader || !fragmentShader) {

27
src/dlangui/platforms/sdl/sdlapp.d
View File

@ -100,6 +100,20 @@ class SDLWindow : Window {
private SDL_GLContext _context;
}
version(USE_OPENGL) {
protected bool createContext(int versionMajor, int versionMinor) {
Log.i("Trying to create OpenGL ", versionMajor, ".", versionMinor, " context");
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, versionMajor);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, versionMinor);
_context = SDL_GL_CreateContext(_win); // Create the actual context and make it current
if (!_context)
Log.e("SDL_GL_CreateContext failed: ", fromStringz(SDL_GetError()));
else
Log.i("Created successfully");
return _context !is null;
}
}
protected uint _flags;
bool create(uint flags) {
if (!_dx)
@ -142,14 +156,23 @@ class SDLWindow : Window {
Log.e("SDL2: Failed to create window");
return false;
}
version(USE_OPENGL) {
if (_enableOpengl) {
Log.i("Trying to create OpenGL 3.2 context");
_context = SDL_GL_CreateContext(_win); // Create the actual context and make it current
if (!_context) {
Log.e("SDL_GL_CreateContext failed: ", fromStringz(SDL_GetError()));
_enableOpengl = false;
Log.w("OpenGL support is disabled");
Log.w("trying other versions of OpenGL");
bool flg = false;
flg = flg || createContext(3, 3);
flg = flg || createContext(3, 1);
flg = flg || createContext(4, 0);
flg = flg || createContext(2, 1);
if (!flg) {
_enableOpengl = false;
Log.w("OpenGL support is disabled");
}
}
if (_context && !_gl3Reloaded) {
DerelictGL3.reload();