#ifndef GL_BACKEND_H
#define GL_BACKEND_H
-#define MAX_TEXTUREUNITS 8
+extern r_viewport_t gl_viewport;
+extern matrix4x4_t gl_modelmatrix;
+extern matrix4x4_t gl_viewmatrix;
+extern matrix4x4_t gl_modelviewmatrix;
+extern matrix4x4_t gl_projectionmatrix;
+extern matrix4x4_t gl_modelviewprojectionmatrix;
+extern float gl_modelview16f[16];
+extern float gl_modelviewprojection16f[16];
+extern qboolean gl_modelmatrixchanged;
#define POLYGONELEMENTS_MAXPOINTS 258
-extern int polygonelements[768];
-
-void GL_SetupView_ViewPort (int x, int y, int width, int height);
-void GL_SetupView_Orientation_Identity (void);
-void GL_SetupView_Orientation_FromEntity (vec3_t origin, vec3_t angles);
-void GL_SetupView_Mode_Perspective (double fovx, double fovy, double zNear, double zFar);
-void GL_SetupView_Mode_PerspectiveInfiniteFarClip (double fovx, double fovy, double zNear);
-void GL_SetupView_Mode_Ortho (double x1, double y1, double x2, double y2, double zNear, double zFar);
-void GL_UseColorArray(void);
+extern int polygonelement3i[(POLYGONELEMENTS_MAXPOINTS-2)*3];
+extern unsigned short polygonelement3s[(POLYGONELEMENTS_MAXPOINTS-2)*3];
+#define QUADELEMENTS_MAXQUADS 128
+extern int quadelement3i[QUADELEMENTS_MAXQUADS*6];
+extern unsigned short quadelement3s[QUADELEMENTS_MAXQUADS*6];
+
+void R_Viewport_TransformToScreen(const r_viewport_t *v, const vec4_t in, vec4_t out);
+void R_Viewport_InitOrtho(r_viewport_t *v, const matrix4x4_t *cameramatrix, int x, int y, int width, int height, float x1, float y1, float x2, float y2, float zNear, float zFar, const float *nearplane);
+void R_Viewport_InitPerspective(r_viewport_t *v, const matrix4x4_t *cameramatrix, int x, int y, int width, int height, float frustumx, float frustumy, float zNear, float zFar, const float *nearplane);
+void R_Viewport_InitPerspectiveInfinite(r_viewport_t *v, const matrix4x4_t *cameramatrix, int x, int y, int width, int height, float frustumx, float frustumy, float zNear, const float *nearplane);
+void R_Viewport_InitCubeSideView(r_viewport_t *v, const matrix4x4_t *cameramatrix, int side, int size, float nearclip, float farclip, const float *nearplane);
+void R_Viewport_InitRectSideView(r_viewport_t *v, const matrix4x4_t *cameramatrix, int side, int size, int border, float nearclip, float farclip, const float *nearplane);
+void R_SetViewport(const r_viewport_t *v);
+void R_GetViewport(r_viewport_t *v);
+
+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);
void GL_Color(float cr, float cg, float cb, float ca);
-void GL_TransformToScreen(const vec4_t in, vec4_t out);
-
-extern cvar_t gl_lockarrays;
-
-extern int c_meshelements, c_meshs;
-
-//input to R_Mesh_State
-typedef struct
-{
- int depthwrite; // force depth writing enabled even if polygon is not opaque
- int depthdisable; // disable depth read/write entirely
- int blendfunc1;
- int blendfunc2;
- //int wantoverbright;
- int tex1d[MAX_TEXTUREUNITS];
- int tex[MAX_TEXTUREUNITS];
- int tex3d[MAX_TEXTUREUNITS];
- int texcubemap[MAX_TEXTUREUNITS];
- int texrgbscale[MAX_TEXTUREUNITS]; // used only if COMBINE is present
- int texalphascale[MAX_TEXTUREUNITS]; // used only if COMBINE is present
- int texcombinergb[MAX_TEXTUREUNITS]; // works with or without combine for some operations
- int texcombinealpha[MAX_TEXTUREUNITS]; // does nothing without combine
-}
-rmeshstate_t;
-
-// overbright rendering scale for the current state
-extern int r_lightmapscalebit;
-extern float r_colorscale;
-extern float *varray_vertex;
-extern float *varray_color;
-extern float *varray_texcoord[MAX_TEXTUREUNITS];
-extern int mesh_maxverts;
+void GL_ActiveTexture(unsigned int num);
+void GL_ClientActiveTexture(unsigned int num);
+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 geometrystrings_count, const char **geometrystrings_list, int fragmentstrings_count, const char **fragmentstrings_list);
+void GL_Backend_FreeProgram(unsigned int prog);
+
+extern cvar_t gl_paranoid;
+extern cvar_t gl_printcheckerror;
// adds console variables and registers the render module (only call from GL_Init)
void gl_backend_init(void);
// (only valid after R_Mesh_Start)
void R_Mesh_Finish(void);
-// sets up the requested transform matrix
-void R_Mesh_Matrix(const matrix4x4_t *matrix);
-
-// sets up the requested state
-void R_Mesh_State(const rmeshstate_t *m);
-
-// sets up the requested main state
-void R_Mesh_MainState(const rmeshstate_t *m);
-
-// sets up the requested texture state
-void R_Mesh_TextureState(const rmeshstate_t *m);
-
-// prepares varray_* buffers for rendering a mesh
-void R_Mesh_GetSpace(int numverts);
-// renders the mesh in the varray_* buffers
-void R_Mesh_Draw(int numverts, int numtriangles, const int *elements);
-
-// saves a section of the rendered frame to a .tga file
-qboolean SCR_ScreenShot(char *filename, int x, int y, int width, int height);
+// 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_EntityMatrix(const matrix4x4_t *matrix);
+// sets the vertex array pointer
+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, 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, int bufferobject, size_t bufferoffset);
+// returns current texture bound to this identifier
+int R_Mesh_TexBound(unsigned int unitnum, int id);
+// copies a section of the framebuffer to a 2D texture
+void R_Mesh_CopyToTexture(rtexture_t *tex, int tx, int ty, int sx, int sy, int width, int height);
+// bind a given texture to a given image unit
+void R_Mesh_TexBind(unsigned int unitnum, rtexture_t *tex);
+// sets the texcoord matrix for a texenv unit, can be NULL or blank (will use identity)
+void R_Mesh_TexMatrix(unsigned int unitnum, const matrix4x4_t *matrix);
+// sets the combine state for a texenv unit
+void R_Mesh_TexCombine(unsigned int unitnum, int combinergb, int combinealpha, int rgbscale, int alphascale);
+// set up a blank texture state (unbinds all textures, texcoord pointers, and resets combine settings)
+void R_Mesh_ResetTextureState(void);
+
+// renders a mesh
+void R_Mesh_Draw(int firstvertex, int numvertices, int firsttriangle, int numtriangles, const int *element3i, const unsigned short *element3s, int bufferobject3i, int bufferobject3s);
+
+// saves a section of the rendered frame to a .tga or .jpg file
+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 png, 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);
+void R_ClearScreen(qboolean fogcolor);
#endif
projects / xonotic / darkplaces.git / blobdiff