implemented r_glsl_water cvar (refraction and reflection rendering)

[xonotic/darkplaces.git] / gl_backend.h

diff --git a/gl_backend.h b/gl_backend.h
index 248c4efd9b809568ffc2f24f23f602118942e98c..a2209c95fe2904b510e957dea00a7e2c0aee8b3a 100644 (file)
--- a/gl_backend.h
+++ b/gl_backend.h
@@ -2,7 +2,8 @@
 #ifndef GL_BACKEND_H
 #define GL_BACKEND_H
 
-#define MAX_TEXTUREUNITS 16
+// how many texture units to track state on (backendunits/backendimageunits/backendarrayunits are limited to this value)
+#define MAX_TEXTUREUNITS 64
 
 #define POLYGONELEMENTS_MAXPOINTS 258
 extern int polygonelements[(POLYGONELEMENTS_MAXPOINTS-2)*3];
@@ -10,13 +11,16 @@ extern int polygonelements[(POLYGONELEMENTS_MAXPOINTS-2)*3];
 extern int quadelements[QUADELEMENTS_MAXQUADS*6];
 
 void GL_SetupView_Orientation_Identity(void);
-void GL_SetupView_Orientation_FromEntity(matrix4x4_t *matrix);
+void GL_SetupView_Orientation_FromEntity(const matrix4x4_t *matrix);
 void GL_SetupView_Mode_Perspective(double frustumx, double frustumy, double zNear, double zFar);
 void GL_SetupView_Mode_PerspectiveInfiniteFarClip(double frustumx, double frustumy, double zNear);
 void GL_SetupView_Mode_Ortho(double x1, double y1, double x2, double y2, double zNear, double zFar);
+void GL_SetupView_ApplyCustomNearClipPlane(double normalx, double normaly, double normalz, double dist);
 void GL_BlendFunc(int blendfunc1, int blendfunc2);
 void GL_DepthMask(int state);
 void GL_DepthTest(int state);
+void GL_DepthRange(float nearfrac, float farfrac);
+void GL_PolygonOffset(float planeoffset, float depthoffset);
 void GL_CullFace(int state);
 void GL_AlphaTest(int state);
 void GL_ColorMask(int r, int g, int b, int a);
@@ -29,7 +33,7 @@ void GL_Scissor(int x, int y, int width, int height);
 void GL_ScissorTest(int state);
 void GL_Clear(int mask);
 
-unsigned int GL_Backend_CompileProgram(int vertexstrings_count, const char **vertexstrings_list, int fragmentstrings_count, const char **fragmentstrings_list);
+unsigned int GL_Backend_CompileProgram(int vertexstrings_count, const char **vertexstrings_list, int geometrystrings_count, const char **geometrystrings_list, int fragmentstrings_count, const char **fragmentstrings_list);
 void GL_Backend_FreeProgram(unsigned int prog);
 
 extern cvar_t gl_lockarrays;
@@ -55,6 +59,8 @@ typedef struct rmeshstate_s
        // pointers
        const float *pointer_texcoord[MAX_TEXTUREUNITS]; // 2D
        const float *pointer_texcoord3f[MAX_TEXTUREUNITS]; // 3D
+       int pointer_texcoord_bufferobject[MAX_TEXTUREUNITS]; // 2D and 3D
+       size_t pointer_texcoord_bufferoffset[MAX_TEXTUREUNITS]; // 2D and 3D
 }
 rmeshstate_t;
 
@@ -68,14 +74,28 @@ void R_Mesh_Start(void);
 // (only valid after R_Mesh_Start)
 void R_Mesh_Finish(void);
 
+// allocates a static element array buffer object
+// (storing triangle data in video memory)
+int R_Mesh_CreateStaticEBO(void *data, size_t size);
+// frees an element array buffer object
+void R_Mesh_DestroyEBO(int bufferobject);
+// allocates a static vertex/element array buffer object
+// (storing vertex or element data in video memory)
+// target is GL_ELEMENT_ARRAY_BUFFER_ARB (triangle elements)
+// or GL_ARRAY_BUFFER_ARB (vertex data)
+int R_Mesh_CreateStaticBufferObject(unsigned int target, void *data, size_t size, const char *name);
+// frees a vertex/element array buffer object
+void R_Mesh_DestroyBufferObject(int bufferobject);
+void GL_Mesh_ListVBOs(qboolean printeach);
+
 // sets up the requested vertex transform matrix
 void R_Mesh_Matrix(const matrix4x4_t *matrix);
 // sets the vertex array pointer
-void R_Mesh_VertexPointer(const float *vertex3f);
+void R_Mesh_VertexPointer(const float *vertex3f, int bufferobject, size_t bufferoffset);
 // sets the color array pointer (GL_Color only works when this is NULL)
-void R_Mesh_ColorPointer(const float *color4f);
+void R_Mesh_ColorPointer(const float *color4f, int bufferobject, size_t bufferoffset);
 // sets the texcoord array pointer for an array unit
-void R_Mesh_TexCoordPointer(unsigned int unitnum, unsigned int numcomponents, const float *texcoord);
+void R_Mesh_TexCoordPointer(unsigned int unitnum, unsigned int numcomponents, const float *texcoord, int bufferobject, size_t bufferoffset);
 // sets all textures bound to an image unit (multiple can be non-zero at once, according to OpenGL rules the highest one overrides the others)
 void R_Mesh_TexBindAll(unsigned int unitnum, int tex1d, int tex2d, int tex3d, int texcubemap);
 // sets these are like TexBindAll with only one of the texture indices non-zero
@@ -94,7 +114,7 @@ void R_Mesh_TextureState(const rmeshstate_t *m);
 void R_Mesh_ResetTextureState(void);
 
 // renders a mesh
-void R_Mesh_Draw(int firstvertex, int numvertices, int numtriangles, const int *elements);
+void R_Mesh_Draw(int firstvertex, int numvertices, int numtriangles, const int *elements, int bufferobject, size_t bufferoffset);
 // renders a mesh as lines
 void R_Mesh_Draw_ShowTris(int firstvertex, int numvertices, int numtriangles, const int *elements);
 
@@ -102,10 +122,8 @@ void R_Mesh_Draw_ShowTris(int firstvertex, int numvertices, int numtriangles, co
 qboolean SCR_ScreenShot(char *filename, unsigned char *buffer1, unsigned char *buffer2, unsigned char *buffer3, int x, int y, int width, int height, qboolean flipx, qboolean flipy, qboolean flipdiagonal, qboolean jpeg, qboolean gammacorrect);
 // used by R_Envmap_f and internally in backend, clears the frame
 void R_ClearScreen(void);
-// invoke refresh of frame
-void SCR_UpdateScreen(void);
 // invoke refresh of loading plaque (nothing else seen)
-void SCR_UpdateLoadingScreen(void);
+void SCR_UpdateLoadingScreen(qboolean clear);
 
 #endif