cvar_t gl_mesh_maxverts = {0, "gl_mesh_maxverts", "1024"};
cvar_t gl_mesh_floatcolors = {0, "gl_mesh_floatcolors", "1"};
cvar_t gl_mesh_drawrangeelements = {0, "gl_mesh_drawrangeelements", "1"};
+cvar_t gl_delayfinish = {CVAR_SAVE, "gl_delayfinish", "0"};
cvar_t r_render = {0, "r_render", "1"};
cvar_t gl_dither = {CVAR_SAVE, "gl_dither", "1"}; // whether or not to use dithering
break;
#endif
#ifdef GL_TABLE_TOO_LARGE
- case GL_TABLE_TOO_LARGE:
+ case GL_TABLE_TOO_LARGE:
Con_Printf("GL_TABLE_TOO_LARGE at %s:%i\n", filename, linenumber);
break;
#endif
// these are externally accessible
int r_lightmapscalebit;
float r_colorscale;
-float *varray_vertex;
-float *varray_color;
-float *varray_texcoord[MAX_TEXTUREUNITS];
+GLfloat *varray_vertex, *varray_buf_vertex;
+GLfloat *varray_color, *varray_buf_color;
+GLfloat *varray_texcoord[MAX_TEXTUREUNITS], *varray_buf_texcoord[MAX_TEXTUREUNITS];
int mesh_maxverts;
+int varray_offset = 0, varray_offsetnext = 0;
+GLuint *varray_buf_elements;
+int mesh_maxelements = 3072;
static matrix4x4_t backend_viewmatrix;
static matrix4x4_t backend_modelmatrix;
static matrix4x4_t backend_modelviewmatrix;
static matrix4x4_t backend_glmodelviewmatrix;
+static matrix4x4_t backend_projectmatrix;
static int backendunits, backendactive;
-static qbyte *varray_bcolor;
+static GLubyte *varray_bcolor, *varray_buf_bcolor;
static mempool_t *gl_backend_mempool;
+/*
+note: here's strip order for a terrain row:
+0--1--2--3--4
+|\ |\ |\ |\ |
+| \| \| \| \|
+A--B--C--D--E
+
+A0B, 01B, B1C, 12C, C2D, 23D, D3E, 34E
+
+*elements++ = i + row;
+*elements++ = i;
+*elements++ = i + row + 1;
+*elements++ = i;
+*elements++ = i + 1;
+*elements++ = i + row + 1;
+*/
+
+void GL_Backend_AllocElementsArray(void)
+{
+ if (varray_buf_elements)
+ Mem_Free(varray_buf_elements);
+ varray_buf_elements = Mem_Alloc(gl_backend_mempool, mesh_maxelements * sizeof(GLuint));
+}
+
+void GL_Backend_FreeElementArray(void)
+{
+ if (varray_buf_elements)
+ Mem_Free(varray_buf_elements);
+ varray_buf_elements = NULL;
+}
+
int polygonelements[768];
void GL_Backend_AllocArrays(void)
{
int i;
- for (i = 0;i < POLYGONELEMENTS_MAXPOINTS - 2;i++)
+ if (!gl_backend_mempool)
{
- polygonelements[i * 3 + 0] = 0;
- polygonelements[i * 3 + 1] = i + 1;
- polygonelements[i * 3 + 2] = i + 2;
+ gl_backend_mempool = Mem_AllocPool("GL_Backend");
+ varray_buf_vertex = NULL;
+ varray_buf_color = NULL;
+ varray_buf_bcolor = NULL;
+ varray_buf_elements = NULL;
+ for (i = 0;i < MAX_TEXTUREUNITS;i++)
+ varray_buf_texcoord[i] = NULL;
}
- if (!gl_backend_mempool)
- gl_backend_mempool = Mem_AllocPool("GL_Backend");
+ if (varray_buf_vertex)
+ Mem_Free(varray_buf_vertex);
+ varray_buf_vertex = NULL;
+ if (varray_buf_color)
+ Mem_Free(varray_buf_color);
+ varray_buf_color = NULL;
+ if (varray_buf_bcolor)
+ Mem_Free(varray_buf_bcolor);
+ varray_buf_bcolor = NULL;
+ for (i = 0;i < MAX_TEXTUREUNITS;i++)
+ {
+ if (varray_buf_texcoord[i])
+ Mem_Free(varray_buf_texcoord[i]);
+ varray_buf_texcoord[i] = NULL;
+ }
- varray_vertex = Mem_Alloc(gl_backend_mempool, mesh_maxverts * sizeof(float[4]));
- varray_color = Mem_Alloc(gl_backend_mempool, mesh_maxverts * sizeof(float[4]));
- varray_bcolor = Mem_Alloc(gl_backend_mempool, mesh_maxverts * sizeof(qbyte[4]));
+ varray_buf_vertex = Mem_Alloc(gl_backend_mempool, mesh_maxverts * sizeof(GLfloat[4]));
+ varray_buf_color = Mem_Alloc(gl_backend_mempool, mesh_maxverts * sizeof(GLfloat[4]));
+ varray_buf_bcolor = Mem_Alloc(gl_backend_mempool, mesh_maxverts * sizeof(GLubyte[4]));
for (i = 0;i < backendunits;i++)
- varray_texcoord[i] = Mem_Alloc(gl_backend_mempool, mesh_maxverts * sizeof(float[4]));
+ varray_buf_texcoord[i] = Mem_Alloc(gl_backend_mempool, mesh_maxverts * sizeof(GLfloat[4]));
for (;i < MAX_TEXTUREUNITS;i++)
- varray_texcoord[i] = NULL;
+ varray_buf_texcoord[i] = NULL;
+
+ GL_Backend_AllocElementsArray();
}
-void GL_Backend_FreeArrays(int resizingbuffers)
+void GL_Backend_FreeArrays(void)
{
int i;
- if (resizingbuffers)
- Mem_EmptyPool(gl_backend_mempool);
- else
- Mem_FreePool(&gl_backend_mempool);
- varray_vertex = NULL;
- varray_color = NULL;
- varray_bcolor = NULL;
+ Mem_FreePool(&gl_backend_mempool);
+
+ varray_buf_vertex = NULL;
+ varray_buf_color = NULL;
+ varray_buf_bcolor = NULL;
for (i = 0;i < MAX_TEXTUREUNITS;i++)
- varray_texcoord[i] = NULL;
+ varray_buf_texcoord[i] = NULL;
+
+ varray_buf_elements = NULL;
}
static void gl_backend_start(void)
Con_Printf("OpenGL Backend shutting down\n");
- GL_Backend_FreeArrays(false);
+ GL_Backend_FreeArrays();
}
void GL_Backend_CheckCvars(void)
Cvar_SetValueQuick(&gl_mesh_maxverts, 21760);
}
-void GL_Backend_ResizeArrays(int numtriangles)
+void GL_Backend_ResizeArrays(int numvertices)
{
- Cvar_SetValueQuick(&gl_mesh_maxverts, numtriangles);
+ Cvar_SetValueQuick(&gl_mesh_maxverts, numvertices);
GL_Backend_CheckCvars();
mesh_maxverts = gl_mesh_maxverts.integer;
- GL_Backend_FreeArrays(true);
GL_Backend_AllocArrays();
}
void gl_backend_init(void)
{
+ int i;
+
+ for (i = 0;i < POLYGONELEMENTS_MAXPOINTS - 2;i++)
+ {
+ polygonelements[i * 3 + 0] = 0;
+ polygonelements[i * 3 + 1] = i + 1;
+ polygonelements[i * 3 + 2] = i + 2;
+ }
+
Cvar_RegisterVariable(&r_render);
Cvar_RegisterVariable(&gl_dither);
Cvar_RegisterVariable(&gl_lockarrays);
+ Cvar_RegisterVariable(&gl_delayfinish);
#ifdef NORENDER
Cvar_SetValue("r_render", 0);
#endif
// set up viewpoint
qglMatrixMode(GL_PROJECTION);CHECKGLERROR
- qglLoadIdentity ();CHECKGLERROR
+ qglLoadIdentity();CHECKGLERROR
// pyramid slopes
xmax = zNear * tan(fovx * M_PI / 360.0);
ymax = zNear * tan(fovy * M_PI / 360.0);
void GL_SetupView_Mode_PerspectiveInfiniteFarClip (double fovx, double fovy, double zNear)
{
- double nudge, m[16];
+ float nudge, m[16];
if (!r_render.integer)
return;
// set up viewpoint
qglMatrixMode(GL_PROJECTION);CHECKGLERROR
- qglLoadIdentity ();CHECKGLERROR
+ qglLoadIdentity();CHECKGLERROR
// set view pyramid
nudge = 1.0 - 1.0 / (1<<23);
m[ 0] = 1.0 / tan(fovx * M_PI / 360.0);
m[13] = 0;
m[14] = -2 * zNear * nudge;
m[15] = 0;
- qglLoadMatrixd(m);
+ qglLoadMatrixf(m);
qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
GL_SetupView_Orientation_Identity();
+ backend_projectmatrix.m[0][0] = m[0];
+ backend_projectmatrix.m[1][0] = m[1];
+ backend_projectmatrix.m[2][0] = m[2];
+ backend_projectmatrix.m[3][0] = m[3];
+ backend_projectmatrix.m[0][1] = m[4];
+ backend_projectmatrix.m[1][1] = m[5];
+ backend_projectmatrix.m[2][1] = m[6];
+ backend_projectmatrix.m[3][1] = m[7];
+ backend_projectmatrix.m[0][2] = m[8];
+ backend_projectmatrix.m[1][2] = m[9];
+ backend_projectmatrix.m[2][2] = m[10];
+ backend_projectmatrix.m[3][2] = m[11];
+ backend_projectmatrix.m[0][3] = m[12];
+ backend_projectmatrix.m[1][3] = m[13];
+ backend_projectmatrix.m[2][3] = m[14];
+ backend_projectmatrix.m[3][3] = m[15];
}
void GL_SetupView_Mode_Ortho (double x1, double y1, double x2, double y2, double zNear, double zFar)
// set up viewpoint
qglMatrixMode(GL_PROJECTION);CHECKGLERROR
- qglLoadIdentity ();CHECKGLERROR
+ qglLoadIdentity();CHECKGLERROR
qglOrtho(x1, x2, y2, y1, zNear, zFar);
qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
GL_SetupView_Orientation_Identity();
typedef struct gltextureunit_s
{
- unsigned int t1d, t2d, t3d, tcubemap;
- unsigned int arrayenabled;
+ int t1d, t2d, t3d, tcubemap;
+ int arrayenabled;
float rgbscale, alphascale;
int combinergb, combinealpha;
// FIXME: add more combine stuff
unit->combinealpha = GL_MODULATE;
unit->arrayenabled = false;
qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
- if (gl_texture3d)
+ if (gl_texture3d || gl_texturecubemap)
{
- qglTexCoordPointer(3, GL_FLOAT, sizeof(float[4]), varray_texcoord[i]);CHECKGLERROR
+ qglTexCoordPointer(3, GL_FLOAT, sizeof(float[4]), varray_buf_texcoord[i]);CHECKGLERROR
}
else
{
- qglTexCoordPointer(2, GL_FLOAT, sizeof(float[4]), varray_texcoord[i]);CHECKGLERROR
+ qglTexCoordPointer(2, GL_FLOAT, sizeof(float[4]), varray_buf_texcoord[i]);CHECKGLERROR
}
qglDisable(GL_TEXTURE_1D);CHECKGLERROR
qglDisable(GL_TEXTURE_2D);CHECKGLERROR
qglBlendFunc(gl_state.blendfunc1, gl_state.blendfunc2);CHECKGLERROR
qglDisable(GL_BLEND);CHECKGLERROR
qglDepthMask(gl_state.depthmask);CHECKGLERROR
- qglVertexPointer(3, GL_FLOAT, sizeof(float[4]), varray_vertex);CHECKGLERROR
+ qglVertexPointer(3, GL_FLOAT, sizeof(GLfloat[4]), varray_buf_vertex);CHECKGLERROR
qglEnableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
if (gl_mesh_floatcolors.integer)
{
- qglColorPointer(4, GL_FLOAT, sizeof(float[4]), varray_color);CHECKGLERROR
+ qglColorPointer(4, GL_FLOAT, sizeof(GLfloat[4]), varray_buf_color);CHECKGLERROR
}
else
{
- qglColorPointer(4, GL_UNSIGNED_BYTE, sizeof(qbyte[4]), varray_bcolor);CHECKGLERROR
+ qglColorPointer(4, GL_UNSIGNED_BYTE, sizeof(GLubyte[4]), varray_buf_bcolor);CHECKGLERROR
}
GL_Color(1, 1, 1, 1);
qglColor4f(cr, cg, cb, ca);
}
+void GL_TransformToScreen(const vec4_t in, vec4_t out)
+{
+ vec4_t temp;
+ float iw;
+ Matrix4x4_Transform4 (&backend_viewmatrix, in, temp);
+ Matrix4x4_Transform4 (&backend_projectmatrix, temp, out);
+ iw = 1.0f / out[3];
+ out[0] = r_refdef.x + (out[0] * iw + 1.0f) * r_refdef.width * 0.5f;
+ out[1] = r_refdef.y + (out[1] * iw + 1.0f) * r_refdef.height * 0.5f;
+ out[2] = out[2] * iw;
+}
+
// called at beginning of frame
void R_Mesh_Start(void)
{
// (or a union)
volatile int *icolor;
volatile float *fcolor;
- qbyte *bcolor;
+ GLubyte *bcolor;
total = numverts * 4;
// shift float to have 8bit fraction at base of number
- fcolor = varray_color;
+ fcolor = varray_buf_color;
for (i = 0;i < total;)
{
fcolor[i ] += 32768.0f;
}
// then read as integer and kill float bits...
- icolor = (int *)varray_color;
- bcolor = varray_bcolor;
+ icolor = (int *)varray_buf_color;
+ bcolor = varray_buf_bcolor;
for (i = 0;i < total;)
{
- k = icolor[i ] & 0x7FFFFF;if (k > 255) k = 255;bcolor[i ] = (qbyte) k;
- k = icolor[i + 1] & 0x7FFFFF;if (k > 255) k = 255;bcolor[i + 1] = (qbyte) k;
- k = icolor[i + 2] & 0x7FFFFF;if (k > 255) k = 255;bcolor[i + 2] = (qbyte) k;
- k = icolor[i + 3] & 0x7FFFFF;if (k > 255) k = 255;bcolor[i + 3] = (qbyte) k;
+ k = icolor[i ] & 0x7FFFFF;if (k > 255) k = 255;bcolor[i ] = (GLubyte) k;
+ k = icolor[i + 1] & 0x7FFFFF;if (k > 255) k = 255;bcolor[i + 1] = (GLubyte) k;
+ k = icolor[i + 2] & 0x7FFFFF;if (k > 255) k = 255;bcolor[i + 2] = (GLubyte) k;
+ k = icolor[i + 3] & 0x7FFFFF;if (k > 255) k = 255;bcolor[i + 3] = (GLubyte) k;
i += 4;
}
}
-void GL_DrawRangeElements(int firstvert, int endvert, int indexcount, const int *index)
+/*
+// enlarges geometry buffers if they are too small
+void _R_Mesh_ResizeCheck(int numverts)
{
- int arraylocked = false;
- c_meshs++;
- c_meshelements += indexcount;
- if (indexcount == 0 || endvert == firstvert)
- {
- Con_Printf("GL_DrawRangeElements(%d, %d, %d, %08p);\n", firstvert, endvert, indexcount, index);
- return;
- }
- if (gl_supportslockarrays && gl_lockarrays.integer)
- {
- qglLockArraysEXT(firstvert, endvert - firstvert);
- CHECKGLERROR
- arraylocked = true;
- }
- if (gl_mesh_drawrangeelements.integer && qglDrawRangeElements != NULL)
- qglDrawRangeElements(GL_TRIANGLES, firstvert, endvert, indexcount, GL_UNSIGNED_INT, (const GLuint *) index);
- else
- qglDrawElements(GL_TRIANGLES, indexcount, GL_UNSIGNED_INT, (const GLuint *) index);
- CHECKGLERROR
- if (arraylocked)
+ if (numverts > mesh_maxverts)
{
- qglUnlockArraysEXT();
- CHECKGLERROR
- arraylocked = false;
+ BACKENDACTIVECHECK
+ GL_Backend_ResizeArrays(numverts + 100);
+ GL_Backend_ResetState();
}
}
+*/
-// enlarges geometry buffers if they are too small
-void _R_Mesh_ResizeCheck(int numverts)
+void GL_Backend_RenumberElements(int numelements, const int *in, int offset)
{
+ int i;
+ for (i = 0;i < numelements;i++)
+ varray_buf_elements[i] = in[i] + offset;
+}
+
+// gets geometry space for a mesh
+void R_Mesh_GetSpace(int numverts)
+{
+ int i;
+
+ varray_offset = varray_offsetnext;
+ if (varray_offset + numverts > mesh_maxverts)
+ {
+ //flush stuff here
+ varray_offset = 0;
+ }
if (numverts > mesh_maxverts)
{
BACKENDACTIVECHECK
GL_Backend_ResizeArrays(numverts + 100);
GL_Backend_ResetState();
+ varray_offset = 0;
}
+
+ // for debugging
+ //varray_offset = rand() % (mesh_maxverts - numverts);
+
+ varray_vertex = varray_buf_vertex + varray_offset * 4;
+ varray_color = varray_buf_color + varray_offset * 4;
+ varray_bcolor = varray_buf_bcolor + varray_offset * 4;
+ for (i = 0;i < backendunits;i++)
+ varray_texcoord[i] = varray_buf_texcoord[i] + varray_offset * 4;
+
+ varray_offsetnext = varray_offset + numverts;
}
-// renders the mesh
+// renders the current mesh
void R_Mesh_Draw(int numverts, int numtriangles, const int *elements)
{
- BACKENDACTIVECHECK
-
- CHECKGLERROR
-
+ int numelements;
+ if (numtriangles == 0 || numverts == 0)
+ {
+ Con_Printf("R_Mesh_Draw(%d, %d, %08p);\n", numverts, numtriangles, elements);
+ return;
+ }
+ numelements = numtriangles * 3;
+ if (mesh_maxelements < numelements)
+ {
+ mesh_maxelements = numelements;
+ GL_Backend_AllocElementsArray();
+ }
+ GL_Backend_RenumberElements(numelements, elements, varray_offset);
+ c_meshs++;
+ c_meshelements += numelements;
if (gl_state.colorarray && !gl_mesh_floatcolors.integer)
GL_ConvertColorsFloatToByte(numverts);
- if (!r_render.integer)
- return;
- GL_DrawRangeElements(0, numverts, numtriangles * 3, elements);
+ if (r_render.integer)
+ {
+ if (gl_supportslockarrays && gl_lockarrays.integer)
+ {
+ qglLockArraysEXT(varray_offset, numverts);
+ CHECKGLERROR
+ if (gl_mesh_drawrangeelements.integer && qglDrawRangeElements != NULL)
+ {
+ qglDrawRangeElements(GL_TRIANGLES, varray_offset, varray_offset + numverts, numelements, GL_UNSIGNED_INT, (const GLuint *) varray_buf_elements);
+ CHECKGLERROR
+ }
+ else
+ {
+ qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_INT, (const GLuint *) varray_buf_elements);
+ CHECKGLERROR
+ }
+ qglUnlockArraysEXT();
+ CHECKGLERROR
+ }
+ else
+ {
+ qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_INT, (const GLuint *) varray_buf_elements);
+ CHECKGLERROR
+ }
+ }
}
// restores backend state, used when done with 3D rendering
qboolean SCR_ScreenShot(char *filename, int x, int y, int width, int height)
{
qboolean ret;
- int i;
+ int i, j;
qbyte *buffer;
if (!r_render.integer)
// LordHavoc: compensate for v_overbrightbits when using hardware gamma
if (v_hwgamma.integer)
+ {
for (i = 0;i < width * height * 3;i++)
- buffer[i] <<= v_overbrightbits.integer;
+ {
+ j = buffer[i] << v_overbrightbits.integer;
+ buffer[i] = (qbyte) (bound(0, j, 255));
+ }
+ }
ret = Image_WriteTGARGB_preflipped(filename, width, height, buffer);
{
// clear to black
qglClearColor(0,0,0,0);CHECKGLERROR
+ qglClearDepth(1);CHECKGLERROR
+ if (gl_stencil)
+ {
+ // LordHavoc: we use a stencil centered around 128 instead of 0,
+ // to avoid clamping interfering with strange shadow volume
+ // drawing orders
+ qglClearStencil(128);CHECKGLERROR
+ }
// clear the screen
qglClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | (gl_stencil ? GL_STENCIL_BUFFER_BIT : 0));CHECKGLERROR
// set dithering mode
*/
void SCR_UpdateScreen (void)
{
- VID_Finish ();
+ if (gl_delayfinish.integer)
+ {
+ VID_Finish ();
- R_TimeReport("finish");
+ R_TimeReport("finish");
+ }
if (r_textureunits.integer > gl_textureunits)
Cvar_SetValueQuick(&r_textureunits, gl_textureunits);
// draw 2D stuff
R_DrawQueue();
- // tell driver to commit it's partially full geometry queue to the rendering queue
- // (this doesn't wait for the commands themselves to complete)
- qglFlush();
+ if (gl_delayfinish.integer)
+ {
+ // tell driver to commit it's partially full geometry queue to the rendering queue
+ // (this doesn't wait for the commands themselves to complete)
+ qglFlush();
+ }
+ else
+ {
+ VID_Finish ();
+
+ R_TimeReport("finish");
+ }
}
projects / xonotic / darkplaces.git / blobdiff