#define BACKENDACTIVECHECK if (!backendactive) Sys_Error("GL backend function called when backend is not active\n");
-float r_mesh_farclip;
-
int c_meshs, c_meshelements;
-int lightscalebit;
-float lightscale;
-float overbrightscale;
-
void SCR_ScreenShot_f (void);
// these are externally accessible
-float mesh_colorscale;
+int r_lightmapscalebit;
+float r_colorscale;
float *varray_vertex;
float *varray_color;
float *varray_texcoord[MAX_TEXTUREUNITS];
R_RegisterModule("GL_Backend", gl_backend_start, gl_backend_shutdown, gl_backend_newmap);
}
-/*
-=============
-GL_SetupFrame
-=============
-*/
-static void GL_SetupFrame (void)
+void GL_SetupView_ViewPort (int x, int y, int width, int height)
{
- double xmax, ymax;
- double fovx, fovy, zNear, zFar, aspect;
-
if (!r_render.integer)
return;
- qglDepthFunc (GL_LEQUAL);CHECKGLERROR
+ // y is weird beause OpenGL is bottom to top, we use top to bottom
+ qglViewport(x, vid.realheight - (y + height), width, height);
+ CHECKGLERROR
+}
- // set up viewpoint
- qglMatrixMode(GL_PROJECTION);CHECKGLERROR
- qglLoadIdentity ();CHECKGLERROR
+void GL_SetupView_Orientation_Identity (void)
+{
+ Matrix4x4_CreateIdentity(&backend_viewmatrix);
+ memset(&backend_modelmatrix, 0, sizeof(backend_modelmatrix));
+}
- // y is weird beause OpenGL is bottom to top, we use top to bottom
- qglViewport(r_refdef.x, vid.realheight - (r_refdef.y + r_refdef.height), r_refdef.width, r_refdef.height);CHECKGLERROR
+void GL_SetupView_Orientation_FromEntity (vec3_t origin, vec3_t angles)
+{
+ Matrix4x4_CreateRotate(&backend_viewmatrix, -90, 1, 0, 0);
+ Matrix4x4_ConcatRotate(&backend_viewmatrix, 90, 0, 0, 1);
+ Matrix4x4_ConcatRotate(&backend_viewmatrix, -angles[2], 1, 0, 0);
+ Matrix4x4_ConcatRotate(&backend_viewmatrix, -angles[0], 0, 1, 0);
+ Matrix4x4_ConcatRotate(&backend_viewmatrix, -angles[1], 0, 0, 1);
+ Matrix4x4_ConcatTranslate(&backend_viewmatrix, -origin[0], -origin[1], -origin[2]);
+ memset(&backend_modelmatrix, 0, sizeof(backend_modelmatrix));
+}
- // depth range
- zNear = 1.0;
- zFar = r_mesh_farclip;
- if (zFar < 64)
- zFar = 64;
+void GL_SetupView_Mode_Perspective (double aspect, double fovx, double fovy, double zNear, double zFar)
+{
+ double xmax, ymax;
- // fov angles
- fovx = r_refdef.fov_x;
- fovy = r_refdef.fov_y;
- aspect = r_refdef.width / r_refdef.height;
+ if (!r_render.integer)
+ return;
+ // set up viewpoint
+ qglMatrixMode(GL_PROJECTION);CHECKGLERROR
+ qglLoadIdentity ();CHECKGLERROR
// pyramid slopes
- xmax = zNear * tan(fovx * M_PI / 360.0) * aspect;
+ xmax = zNear * tan(fovx * M_PI / 360.0);
ymax = zNear * tan(fovy * M_PI / 360.0);
-
// set view pyramid
qglFrustum(-xmax, xmax, -ymax, ymax, zNear, zFar);CHECKGLERROR
-
qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
+ GL_SetupView_Orientation_Identity();
+}
- Matrix4x4_CreateRotate(&backend_viewmatrix, -90, 1, 0, 0);
- Matrix4x4_ConcatRotate(&backend_viewmatrix, 90, 0, 0, 1);
- Matrix4x4_ConcatRotate(&backend_viewmatrix, -r_refdef.viewangles[2], 1, 0, 0);
- Matrix4x4_ConcatRotate(&backend_viewmatrix, -r_refdef.viewangles[0], 0, 1, 0);
- Matrix4x4_ConcatRotate(&backend_viewmatrix, -r_refdef.viewangles[1], 0, 0, 1);
- Matrix4x4_ConcatTranslate(&backend_viewmatrix, -r_refdef.vieworg[0], -r_refdef.vieworg[1], -r_refdef.vieworg[2]);
- //Con_Printf("Our Matrix:\n");
- //Matrix4x4_Print(&backend_viewmatrix);
-
- //Matrix4x4_Transpose(&backend_glmodelviewmatrix, &backend_viewmatrix);
- //qglLoadMatrixf(&backend_glmodelviewmatrix.m[0][0]);CHECKGLERROR
- memset(&backend_modelmatrix, 0, sizeof(backend_modelmatrix));
+void GL_SetupView_Mode_Ortho (double x1, double y1, double x2, double y2, double zNear, double zFar)
+{
+ if (!r_render.integer)
+ return;
- /*
- // put Z going up
+ // set up viewpoint
+ qglMatrixMode(GL_PROJECTION);CHECKGLERROR
qglLoadIdentity ();CHECKGLERROR
- qglRotatef (-90, 1, 0, 0);CHECKGLERROR
- qglRotatef (90, 0, 0, 1);CHECKGLERROR
- // camera rotation
- qglRotatef (-r_refdef.viewangles[2], 1, 0, 0);CHECKGLERROR
- qglRotatef (-r_refdef.viewangles[0], 0, 1, 0);CHECKGLERROR
- qglRotatef (-r_refdef.viewangles[1], 0, 0, 1);CHECKGLERROR
- // camera location
- qglTranslatef (-r_refdef.vieworg[0], -r_refdef.vieworg[1], -r_refdef.vieworg[2]);CHECKGLERROR
- qglGetFloatv (GL_MODELVIEW_MATRIX, &gl_viewmatrix.m[0][0]);
- Matrix4x4_Transpose(&backend_viewmatrix, &gl_viewmatrix);
- Con_Printf("GL Matrix:\n");
- Matrix4x4_Print(&backend_viewmatrix);
- */
+ qglOrtho(x1, x2, y2, y1, zNear, zFar);
+ qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
+ GL_SetupView_Orientation_Identity();
}
static struct
int clientunit;
int texture[MAX_TEXTUREUNITS];
float texturergbscale[MAX_TEXTUREUNITS];
+ int colorarray;
}
gl_state;
}
}
-int usedarrays;
void GL_Backend_ResetState(void)
{
int i;
gl_state.depthmask = GL_TRUE;
qglDepthMask(gl_state.depthmask);CHECKGLERROR
- usedarrays = false;
- usedarrays = true;
qglVertexPointer(3, GL_FLOAT, sizeof(float[4]), varray_vertex);CHECKGLERROR
qglEnableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
if (gl_mesh_floatcolors.integer)
{
qglColorPointer(4, GL_UNSIGNED_BYTE, sizeof(qbyte[4]), varray_bcolor);CHECKGLERROR
}
- qglEnableClientState(GL_COLOR_ARRAY);CHECKGLERROR
+ // LordHavoc: default to color array off
+ gl_state.colorarray = false;
+ GL_Color(1, 1, 1, 1);
GL_SetupTextureState();
}
+void GL_UseColorArray(void)
+{
+ if (!gl_state.colorarray)
+ {
+ gl_state.colorarray = true;
+ qglEnableClientState(GL_COLOR_ARRAY);CHECKGLERROR
+ }
+}
+
+void GL_Color(float cr, float cg, float cb, float ca)
+{
+ if (gl_state.colorarray)
+ {
+ gl_state.colorarray = false;
+ qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
+ }
+ qglColor4f(cr, cg, cb, ca);
+}
+
// called at beginning of frame
-void R_Mesh_Start(float farclip)
+void R_Mesh_Start(void)
{
BACKENDACTIVECHECK
CHECKGLERROR
- r_mesh_farclip = farclip;
-
GL_Backend_CheckCvars();
if (mesh_maxverts != gl_mesh_maxverts.integer)
GL_Backend_ResizeArrays(gl_mesh_maxverts.integer);
- GL_SetupFrame();
-
GL_Backend_ResetState();
}
CHECKGLERROR
- if (!gl_mesh_floatcolors.integer)
+ if (gl_state.colorarray && !gl_mesh_floatcolors.integer)
GL_ConvertColorsFloatToByte(numverts);
//GL_TransformVertices(numverts);
if (!r_render.integer)
}
qglBindTexture(GL_TEXTURE_2D, 0);CHECKGLERROR
- if (usedarrays)
- {
- qglClientActiveTexture(GL_TEXTURE0_ARB + i);CHECKGLERROR
- qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
- }
+ qglClientActiveTexture(GL_TEXTURE0_ARB + i);CHECKGLERROR
+ qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
}
}
else
{
qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);CHECKGLERROR
qglEnable(GL_TEXTURE_2D);CHECKGLERROR
- if (usedarrays)
- {
- qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
- }
- }
- if (usedarrays)
- {
- qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
- qglDisableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
+ qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
}
+ qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
+ qglDisableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
qglDisable(GL_BLEND);CHECKGLERROR
qglEnable(GL_DEPTH_TEST);CHECKGLERROR
qglBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);CHECKGLERROR
}
-void R_Mesh_ClearDepth(void)
-{
- BACKENDACTIVECHECK
-
- R_Mesh_Finish();
- qglClear(GL_DEPTH_BUFFER_BIT);
- R_Mesh_Start(r_mesh_farclip);
-}
-
void R_Mesh_Matrix(const matrix4x4_t *matrix)
{
if (memcmp(matrix, &backend_modelmatrix, sizeof(matrix4x4_t)))
}
// sets up the requested state
-void R_Mesh_State(const rmeshstate_t *m)
+void R_Mesh_MainState(const rmeshstate_t *m)
{
- int i, overbright;
- int texturergbscale[MAX_TEXTUREUNITS];
- float scaler;
-
BACKENDACTIVECHECK
- if (gl_backend_rebindtextures)
- {
- gl_backend_rebindtextures = false;
- GL_SetupTextureState();
- }
-
- overbright = false;
- scaler = 1;
- if (m->blendfunc1 == GL_DST_COLOR)
- {
- // check if it is a 2x modulate with framebuffer
- if (m->blendfunc2 == GL_SRC_COLOR)
- scaler *= 0.5f;
- }
- else if (m->blendfunc2 != GL_SRC_COLOR)
- {
- if (m->tex[0])
- {
- overbright = m->wantoverbright && gl_combine.integer;
- if (overbright)
- scaler *= 0.25f;
- }
- scaler *= overbrightscale;
- }
- mesh_colorscale = scaler;
-
if (gl_state.blendfunc1 != m->blendfunc1 || gl_state.blendfunc2 != m->blendfunc2)
{
qglBlendFunc(gl_state.blendfunc1 = m->blendfunc1, gl_state.blendfunc2 = m->blendfunc2);CHECKGLERROR
{
qglDepthMask(gl_state.depthmask = (m->blendfunc2 == GL_ZERO || m->depthwrite));CHECKGLERROR
}
+}
+
+void R_Mesh_TextureState(const rmeshstate_t *m)
+{
+ int i;
+ int texturergbscale[MAX_TEXTUREUNITS];
+
+ BACKENDACTIVECHECK
+
+ if (gl_backend_rebindtextures)
+ {
+ gl_backend_rebindtextures = false;
+ GL_SetupTextureState();
+ }
for (i = 0;i < backendunits;i++)
{
else
texturergbscale[i] = 1;
}
- if (overbright)
- {
- for (i = backendunits - 1;i >= 0;i--)
- {
- if (m->tex[i])
- {
- texturergbscale[i] = 4;
- break;
- }
- }
- }
if (backendunits > 1)
{
}
}
+void R_Mesh_State(const rmeshstate_t *m)
+{
+ R_Mesh_MainState(m);
+ R_Mesh_TextureState(m);
+}
+
/*
==============================================================================
Cvar_SetValueQuick(&gl_combine, 0);
// lighting scale
- overbrightscale = 1.0f / (float) (1 << v_overbrightbits.integer);
+ r_colorscale = 1.0f / (float) (1 << v_overbrightbits.integer);
// lightmaps only
- lightscalebit = v_overbrightbits.integer;
+ r_lightmapscalebit = v_overbrightbits.integer;
if (gl_combine.integer && r_textureunits.integer > 1)
- lightscalebit += 2;
- lightscale = 1.0f / (float) (1 << lightscalebit);
+ r_lightmapscalebit += 2;
R_TimeReport("setup");
projects / xonotic / darkplaces.git / blobdiff