ecere/gfx/drivers/GL3/GLMultiDraw: Moving GLMultiDraw and GLArrayTexture classes to ecere library

Author: jerstlouis

butterbur/src/opengl/ButterburShader.ec

@@ -10,14 +10,82 @@ import "VersionedShader"
 
 private: // FIXME:  eC bug
 
-define squishFactorAttribute = 7;
-define drawIDAttribute = 8;
-define posOffsetAttribute = 9;
-
-define transform0Attribute = 10;
-define transform1Attribute = 11;
-define transform2Attribute = 12;
-define transform3Attribute = 13;
+define squishFactorAttribute = 100;
+
+Size resetDisplaySize;
+Size displaySize;
+DisplaySystem displaySystem;
+Display glDisplay;
+
+GLCapabilities glCaps;
+bool glCaps_nonPow2Textures, glCaps_vertexBuffer, glCaps_quads, glCaps_intAndDouble, glCaps_legacyFormats, glCaps_compatible, glCaps_vertexPointer;
+bool glCaps_shaders, glCaps_fixedFunction, glCaps_immediate, glCaps_legacy, glCaps_pointSize, glCaps_frameBuffer, glCaps_vao, glCaps_select;
+
+int glVersion;
+int glMinorVersion;
+
+uint defaultVAO;
+
+#ifdef _DEBUG
+void checkGLErrors( const char *file, int line )
+{
+   int e, nCount = 0;
+   while((e = glGetError()) && nCount++ < 10)
+      PrintLn("GL error ", e, "! (at ", file, ":", line, ")");
+}
+#endif
+
+bool loadedGLExts;
+
+uint tempTexFBO; // TODO: Free this on termination... glDeleteFramebuffers(1, &tempTexFBO);
+
+// FIXME: This is currently duplicated here from Ecere's OGL display driver because there is no other mechanism to access defualt VAO
+class TempOGLDisplay : struct
+{
+   GLCapabilities capabilities, originalCapabilities;
+   bool compat;
+   int version;
+   ColorAlpha * flippingBuffer;
+   int flipBufH, flipBufW;
+   bool depthWrite;
+   int x, y;
+   uint vao;
+   int maxTMU;
+}
+
+public void setupGL(Display display)
+{
+   GLCapabilities caps = display.glCapabilities;
+   void * data = display.driverData;
+
+   glDisplay = display;
+   displaySystem = display.displaySystem;
+
+   displaySize = { display.width, display.height };
+   resetDisplaySize = displaySize;
+
+   SETCAPS(caps);
+
+   defaultVAO = ((TempOGLDisplay)data).vao;
+   if(!loadedGLExts)
+   {
+#if defined(__LUMIN__)
+      // TODO: !
+      loadedGLExts = true;
+      glVersion = 4;
+      glMinorVersion = 5;
+#elif defined(__ANDROID__)
+      loadedGLExts = true;
+      glVersion = 3;
+      glMinorVersion = 2;
+#else
+      ogl_LoadFunctions();
+      loadedGLExts = true;
+      glVersion = ogl_GetMajorVersion();
+      glMinorVersion = ogl_GetMinorVersion();
+#endif
+   }
+}
 
 public class ButterburShaderBits : uint64
 {

butterbur/src/presentation/DrawingManager.ec

@@ -3,7 +3,6 @@ public import IMPORT_STATIC "ecere"
 #include "gl123es.h"
 
 import "Presentation"
-import "GLMultiDraw"
 import "ButterburShader"
 import "TIManager"
 

ecere/Makefile

@@ -113,6 +113,7 @@ _ECSOURCES1 = \
 	src/gfx/drivers/LFBDisplayDriver.ec \
 	$(if $(or $(LINUX_TARGET),$(OSX_TARGET)),src/gfx/drivers/NCursesDisplayDriver.ec,) \
 	$(if $(DISABLE_GL),,src/gfx/drivers/OpenGLDisplayDriver.ec) \
+	$(if $(DISABLE_GL),,src/gfx/drivers/gl3/GLMultiDraw.ec) \
 	$(if $(WINDOWS_TARGET),src/gfx/drivers/Win32BitmapPrinterDisplayDriver.ec,)
 _ECSOURCES2 = \
 	$(if ,src/gfx/drivers/CocoaOpenGLDisplayDriver.ec,) \
@@ -798,6 +799,9 @@ $(OBJ)ETC2Format.sym: src/gfx/bitmaps/ETC2Format.ec
 $(OBJ)glab.sym: src/gfx/drivers/gl3/glab.ec
 	$(ECP) $(CFLAGS) $(CECFLAGS) $(ECFLAGS) $(PRJ_CFLAGS) -c src/gfx/drivers/gl3/glab.ec -o $(OBJ)glab.sym
 
+$(OBJ)GLMultiDraw.sym: src/gfx/drivers/gl3/GLMultiDraw.ec
+	$(ECP) $(CFLAGS) $(CECFLAGS) $(ECFLAGS) $(PRJ_CFLAGS) -c src/gfx/drivers/gl3/GLMultiDraw.ec -o $(OBJ)GLMultiDraw.sym
+
 $(OBJ)immediate.sym: src/gfx/drivers/gl3/immediate.ec
 	$(ECP) $(CFLAGS) $(CECFLAGS) $(ECFLAGS) $(PRJ_CFLAGS) -c src/gfx/drivers/gl3/immediate.ec -o $(OBJ)immediate.sym
 
@@ -1258,6 +1262,9 @@ $(OBJ)ETC2Format.c: src/gfx/bitmaps/ETC2Format.ec $(OBJ)ETC2Format.sym | $(SYMBO
 $(OBJ)glab.c: src/gfx/drivers/gl3/glab.ec $(OBJ)glab.sym | $(SYMBOLS)
 	$(ECC) $(CFLAGS) $(CECFLAGS) $(ECFLAGS) $(PRJ_CFLAGS) -c src/gfx/drivers/gl3/glab.ec -o $(OBJ)glab.c -symbols $(OBJ)
 
+$(OBJ)GLMultiDraw.c: src/gfx/drivers/gl3/GLMultiDraw.ec $(OBJ)GLMultiDraw.sym | $(SYMBOLS)
+	$(ECC) $(CFLAGS) $(CECFLAGS) $(ECFLAGS) $(PRJ_CFLAGS) -c src/gfx/drivers/gl3/GLMultiDraw.ec -o $(OBJ)GLMultiDraw.c -symbols $(OBJ)
+
 $(OBJ)immediate.c: src/gfx/drivers/gl3/immediate.ec $(OBJ)immediate.sym | $(SYMBOLS)
 	$(ECC) $(CFLAGS) $(CECFLAGS) $(ECFLAGS) $(PRJ_CFLAGS) -c src/gfx/drivers/gl3/immediate.ec -o $(OBJ)immediate.c -symbols $(OBJ)
 
@@ -2063,6 +2070,9 @@ $(OBJ)gl_compat_4_4.o: src/gfx/drivers/gl3/gl_compat_4_4.c
 $(OBJ)glab.o: $(OBJ)glab.c
 	$(CC) $(CFLAGS) $(PRJ_CFLAGS) -c $(OBJ)glab.c -o $(OBJ)glab.o
 
+$(OBJ)GLMultiDraw.o: $(OBJ)GLMultiDraw.c
+	$(CC) $(CFLAGS) $(PRJ_CFLAGS) -c $(OBJ)GLMultiDraw.c -o $(OBJ)GLMultiDraw.o
+
 $(OBJ)immediate.o: $(OBJ)immediate.c
 	$(CC) $(CFLAGS) $(PRJ_CFLAGS) -c $(OBJ)immediate.c -o $(OBJ)immediate.o
 

ecere/ecere.epj

@@ -1329,6 +1329,12 @@
                                        }
                                     }
                                  ]
+                              },
+                              {
+                                 "FileName" : "GLMultiDraw.ec",
+                                 "Options" : {
+                                    "ExcludeFromBuild" : false
+                                 }
                               }
                            ],
                            "Configurations" : [

ecere/src/gfx/drivers/OpenGLDisplayDriver.ec

@@ -194,14 +194,15 @@ private:
 
 
 // **********   Errors and Debugging   **********
-/*
+#ifdef _DEBUG
 void CheckGLErrors(const String s, int l)
 {
    int e, nCount = 0;
    while((e = glGetError()) && nCount++ < 10)
       printf("GL error %d! (%s:%d)\n", e, s, l);
 }
-*/
+#endif
+
 #ifdef GL_DEBUGGING
 #ifndef APIENTRY
    #define APIENTRY