cvar_t gl_dither = {CVAR_SAVE, "gl_dither", "1", "enables OpenGL dithering (16bit looks bad with this off)"};
cvar_t gl_lockarrays = {0, "gl_lockarrays", "0", "enables use of glLockArraysEXT, may cause glitches with some broken drivers, and may be slower than normal"};
cvar_t gl_lockarrays_minimumvertices = {0, "gl_lockarrays_minimumvertices", "1", "minimum number of vertices required for use of glLockArraysEXT, setting this too low may reduce performance"};
+cvar_t gl_vbo = {0, "gl_vbo", "1", "make use of GL_ARB_vertex_buffer_object extension to store static geometry in video memory for faster rendering"};
int gl_maxdrawrangeelementsvertices;
int gl_maxdrawrangeelementsindices;
{
}
+void GL_VBOStats_f(void)
+{
+ GL_Mesh_ListVBOs(true);
+}
+
+typedef struct gl_bufferobjectinfo_s
+{
+ int target;
+ int object;
+ size_t size;
+ char name[MAX_QPATH];
+}
+gl_bufferobjectinfo_t;
+
+memexpandablearray_t gl_bufferobjectinfoarray;
+
static void gl_backend_start(void)
{
Con_Print("OpenGL Backend starting...\n");
GL_Backend_AllocArrays();
+ Mem_ExpandableArray_NewArray(&gl_bufferobjectinfoarray, r_main_mempool, sizeof(gl_bufferobjectinfo_t), 128);
+
Con_Printf("OpenGL backend started.\n");
CHECKGLERROR
Con_Print("OpenGL Backend shutting down\n");
+ Mem_ExpandableArray_FreeArray(&gl_bufferobjectinfoarray);
+
GL_Backend_FreeArrays();
}
Cvar_RegisterVariable(&gl_dither);
Cvar_RegisterVariable(&gl_lockarrays);
Cvar_RegisterVariable(&gl_lockarrays_minimumvertices);
+ Cvar_RegisterVariable(&gl_vbo);
Cvar_RegisterVariable(&gl_paranoid);
Cvar_RegisterVariable(&gl_printcheckerror);
#ifdef NORENDER
Cvar_RegisterVariable(&gl_mesh_testarrayelement);
Cvar_RegisterVariable(&gl_mesh_testmanualfeeding);
+ Cmd_AddCommand("gl_vbostats", GL_VBOStats_f, "prints a list of all buffer objects (vertex data and triangle elements) and total video memory used by them\n");
+
R_RegisterModule("GL_Backend", gl_backend_start, gl_backend_shutdown, gl_backend_newmap);
}
typedef struct gltextureunit_s
{
+ const void *pointer_texcoord;
+ size_t pointer_texcoord_offset;
+ int pointer_texcoord_buffer;
int t1d, t2d, t3d, tcubemap;
int arrayenabled;
unsigned int arraycomponents;
- const void *pointer_texcoord;
int rgbscale, alphascale;
int combinergb, combinealpha;
// FIXME: add more combine stuff
GLboolean depthmask;
int colormask; // stored as bottom 4 bits: r g b a (3 2 1 0 order)
int depthtest;
+ float depthrange[2];
int alphatest;
int scissortest;
unsigned int unit;
float color4f[4];
int lockrange_first;
int lockrange_count;
+ int vertexbufferobject;
+ int elementbufferobject;
+ qboolean pointer_color_enabled;
const void *pointer_vertex;
const void *pointer_color;
+ size_t pointer_vertex_offset;
+ size_t pointer_color_offset;
+ int pointer_vertex_buffer;
+ int pointer_color_buffer;
}
gl_state;
+static void GL_BindVBO(int bufferobject)
+{
+ if (gl_state.vertexbufferobject != bufferobject)
+ {
+ gl_state.vertexbufferobject = bufferobject;
+ CHECKGLERROR
+ qglBindBufferARB(GL_ARRAY_BUFFER_ARB, bufferobject);
+ CHECKGLERROR
+ }
+}
+
+static void GL_BindEBO(int bufferobject)
+{
+ if (gl_state.elementbufferobject != bufferobject)
+ {
+ gl_state.elementbufferobject = bufferobject;
+ CHECKGLERROR
+ qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, bufferobject);
+ CHECKGLERROR
+ }
+}
+
void GL_SetupTextureState(void)
{
unsigned int i;
unit->arrayenabled = false;
unit->arraycomponents = 0;
unit->pointer_texcoord = NULL;
+ unit->pointer_texcoord_buffer = 0;
+ unit->pointer_texcoord_offset = 0;
unit->rgbscale = 1;
unit->alphascale = 1;
unit->combinergb = GL_MODULATE;
for (i = 0;i < backendarrayunits;i++)
{
GL_ClientActiveTexture(i);
+ GL_BindVBO(0);
qglTexCoordPointer(2, GL_FLOAT, sizeof(float[2]), NULL);CHECKGLERROR
qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
}
gl_state.color4f[0] = gl_state.color4f[1] = gl_state.color4f[2] = gl_state.color4f[3] = 1;
gl_state.lockrange_first = 0;
gl_state.lockrange_count = 0;
- gl_state.pointer_vertex = NULL;
- gl_state.pointer_color = NULL;
gl_state.cullface = GL_FRONT; // quake is backwards, this culls back faces
gl_state.cullfaceenable = true;
qglEnable(GL_DEPTH_TEST);CHECKGLERROR
qglDepthMask(gl_state.depthmask);CHECKGLERROR
+ if (gl_support_arb_vertex_buffer_object)
+ {
+ qglBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
+ qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
+ }
+
qglVertexPointer(3, GL_FLOAT, sizeof(float[3]), NULL);CHECKGLERROR
qglEnableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
}
}
+void GL_DepthRange(float nearfrac, float farfrac)
+{
+ if (gl_state.depthrange[0] != nearfrac || gl_state.depthrange[1] != farfrac)
+ {
+ gl_state.depthrange[0] = nearfrac;
+ gl_state.depthrange[1] = farfrac;
+ qglDepthRange(nearfrac, farfrac);
+ }
+}
+
void GL_CullFace(int state)
{
CHECKGLERROR
void GL_Color(float cr, float cg, float cb, float ca)
{
- if (gl_state.pointer_color || gl_state.color4f[0] != cr || gl_state.color4f[1] != cg || gl_state.color4f[2] != cb || gl_state.color4f[3] != ca)
+ if (gl_state.pointer_color_enabled || gl_state.color4f[0] != cr || gl_state.color4f[1] != cg || gl_state.color4f[2] != cb || gl_state.color4f[3] != ca)
{
gl_state.color4f[0] = cr;
gl_state.color4f[1] = cg;
// renders triangles using vertices from the active arrays
int paranoidblah = 0;
-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)
{
unsigned int numelements = numtriangles * 3;
if (numvertices < 3 || numtriangles < 1)
{
- Con_Printf("R_Mesh_Draw(%d, %d, %d, %8p);\n", firstvertex, numvertices, numtriangles, elements);
+ Con_Printf("R_Mesh_Draw(%d, %d, %d, %8p, %i, %p);\n", firstvertex, numvertices, numtriangles, elements, bufferobject, (void *)bufferoffset);
return;
}
+ if (!gl_vbo.integer)
+ bufferobject = 0;
CHECKGLERROR
r_refdef.stats.meshes++;
r_refdef.stats.meshes_elements += numelements;
{
unsigned int i, j, size;
const int *p;
+ // note: there's no validation done here on buffer objects because it
+ // is somewhat difficult to get at the data, and gl_paranoid can be
+ // used without buffer objects if the need arises
+ // (the data could be gotten using glMapBuffer but it would be very
+ // slow due to uncachable video memory reads)
if (!qglIsEnabled(GL_VERTEX_ARRAY))
Con_Print("R_Mesh_Draw: vertex array not enabled\n");
CHECKGLERROR
- for (j = 0, size = numvertices * 3, p = (int *)((float *)gl_state.pointer_vertex + firstvertex * 3);j < size;j++, p++)
- paranoidblah += *p;
- if (gl_state.pointer_color)
+ if (gl_state.pointer_vertex)
+ for (j = 0, size = numvertices * 3, p = (int *)((float *)gl_state.pointer_vertex + firstvertex * 3);j < size;j++, p++)
+ paranoidblah += *p;
+ if (gl_state.pointer_color_enabled)
{
if (!qglIsEnabled(GL_COLOR_ARRAY))
Con_Print("R_Mesh_Draw: color array set but not enabled\n");
CHECKGLERROR
- for (j = 0, size = numvertices * 4, p = (int *)((float *)gl_state.pointer_color + firstvertex * 4);j < size;j++, p++)
- paranoidblah += *p;
+ if (gl_state.pointer_color && gl_state.pointer_color_enabled)
+ for (j = 0, size = numvertices * 4, p = (int *)((float *)gl_state.pointer_color + firstvertex * 4);j < size;j++, p++)
+ paranoidblah += *p;
}
for (i = 0;i < backendarrayunits;i++)
{
if (!qglIsEnabled(GL_TEXTURE_COORD_ARRAY))
Con_Print("R_Mesh_Draw: texcoord array set but not enabled\n");
CHECKGLERROR
- for (j = 0, size = numvertices * gl_state.units[i].arraycomponents, p = (int *)((float *)gl_state.units[i].pointer_texcoord + firstvertex * gl_state.units[i].arraycomponents);j < size;j++, p++)
- paranoidblah += *p;
+ if (gl_state.units[i].pointer_texcoord && gl_state.units[i].arrayenabled)
+ for (j = 0, size = numvertices * gl_state.units[i].arraycomponents, p = (int *)((float *)gl_state.units[i].pointer_texcoord + firstvertex * gl_state.units[i].arraycomponents);j < size;j++, p++)
+ paranoidblah += *p;
}
}
for (i = 0;i < (unsigned int) numtriangles * 3;i++)
{
for (j = 0;j < backendarrayunits;j++)
{
- if (gl_state.units[j].pointer_texcoord)
+ if (gl_state.units[j].pointer_texcoord && gl_state.units[j].arrayenabled)
{
if (backendarrayunits > 1)
{
}
}
}
- if (gl_state.pointer_color)
+ if (gl_state.pointer_color && gl_state.pointer_color_enabled)
{
p = ((const GLfloat *)(gl_state.pointer_color)) + elements[i] * 4;
qglColor4f(p[0], p[1], p[2], p[3]);
}
else if (gl_mesh_drawrangeelements.integer && qglDrawRangeElements != NULL)
{
- qglDrawRangeElements(GL_TRIANGLES, firstvertex, firstvertex + numvertices, numelements, GL_UNSIGNED_INT, elements);
+ GL_BindEBO(bufferobject);
+ qglDrawRangeElements(GL_TRIANGLES, firstvertex, firstvertex + numvertices, numelements, GL_UNSIGNED_INT, bufferobject ? (void *)bufferoffset : elements);
CHECKGLERROR
}
else
{
- qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_INT, elements);
+ GL_BindEBO(bufferobject);
+ qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_INT, bufferobject ? (void *)bufferoffset : elements);
CHECKGLERROR
}
}
qglBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);CHECKGLERROR
}
+int R_Mesh_CreateStaticBufferObject(unsigned int target, void *data, size_t size, const char *name)
+{
+ gl_bufferobjectinfo_t *info;
+ GLuint bufferobject;
+
+ if (!gl_vbo.integer)
+ return 0;
+
+ qglGenBuffersARB(1, &bufferobject);
+ switch(target)
+ {
+ case GL_ELEMENT_ARRAY_BUFFER_ARB: GL_BindEBO(bufferobject);break;
+ case GL_ARRAY_BUFFER_ARB: GL_BindVBO(bufferobject);break;
+ default: Sys_Error("R_Mesh_CreateStaticBufferObject: unknown target type %i\n", target);return 0;
+ }
+ qglBufferDataARB(target, size, data, GL_STATIC_DRAW_ARB);
+
+ info = Mem_ExpandableArray_AllocRecord(&gl_bufferobjectinfoarray);
+ memset(info, 0, sizeof(*info));
+ info->target = target;
+ info->object = bufferobject;
+ info->size = size;
+ strlcpy(info->name, name, sizeof(info->name));
+
+ return (int)bufferobject;
+}
+
+void R_Mesh_DestroyBufferObject(int bufferobject)
+{
+ int i, endindex;
+ gl_bufferobjectinfo_t *info;
+
+ qglDeleteBuffersARB(1, (GLuint *)&bufferobject);
+
+ endindex = Mem_ExpandableArray_IndexRange(&gl_bufferobjectinfoarray);
+ for (i = 0;i < endindex;i++)
+ {
+ info = Mem_ExpandableArray_RecordAtIndex(&gl_bufferobjectinfoarray, i);
+ if (!info)
+ continue;
+ if (info->object == bufferobject)
+ {
+ Mem_ExpandableArray_FreeRecord(&gl_bufferobjectinfoarray, (void *)info);
+ break;
+ }
+ }
+}
+
+void GL_Mesh_ListVBOs(qboolean printeach)
+{
+ int i, endindex;
+ size_t ebocount = 0, ebomemory = 0;
+ size_t vbocount = 0, vbomemory = 0;
+ gl_bufferobjectinfo_t *info;
+ endindex = Mem_ExpandableArray_IndexRange(&gl_bufferobjectinfoarray);
+ for (i = 0;i < endindex;i++)
+ {
+ info = Mem_ExpandableArray_RecordAtIndex(&gl_bufferobjectinfoarray, i);
+ if (!info)
+ continue;
+ switch(info->target)
+ {
+ case GL_ELEMENT_ARRAY_BUFFER_ARB: ebocount++;ebomemory += info->size;if (printeach) Con_Printf("EBO #%i %s = %i bytes\n", info->object, info->name, (int)info->size);break;
+ case GL_ARRAY_BUFFER_ARB: vbocount++;vbomemory += info->size;if (printeach) Con_Printf("VBO #%i %s = %i bytes\n", info->object, info->name, (int)info->size);break;
+ default: Con_Printf("gl_vbostats: unknown target type %i\n", info->target);break;
+ }
+ }
+ Con_Printf("vertex buffers: %i element buffers totalling %i bytes (%.3f MB), %i vertex buffers totalling %i bytes (%.3f MB), combined %i bytes (%.3fMB)\n", (int)ebocount, (int)ebomemory, ebomemory / 1048576.0, (int)vbocount, (int)vbomemory, vbomemory / 1048576.0, (int)(ebomemory + vbomemory), (ebomemory + vbomemory) / 1048576.0);
+}
+
void R_Mesh_Matrix(const matrix4x4_t *matrix)
{
if (memcmp(matrix, &backend_modelmatrix, sizeof(matrix4x4_t)))
}
}
-void R_Mesh_VertexPointer(const float *vertex3f)
+void R_Mesh_VertexPointer(const float *vertex3f, int bufferobject, size_t bufferoffset)
{
- if (gl_state.pointer_vertex != vertex3f)
+ if (!gl_vbo.integer)
+ bufferobject = 0;
+ if (gl_state.pointer_vertex != vertex3f || gl_state.pointer_vertex_buffer != bufferobject || gl_state.pointer_vertex_offset != bufferoffset)
{
gl_state.pointer_vertex = vertex3f;
+ gl_state.pointer_vertex_buffer = bufferobject;
+ gl_state.pointer_vertex_offset = bufferoffset;
CHECKGLERROR
- qglVertexPointer(3, GL_FLOAT, sizeof(float[3]), gl_state.pointer_vertex);
- CHECKGLERROR
+ GL_BindVBO(bufferobject);
+ qglVertexPointer(3, GL_FLOAT, sizeof(float[3]), bufferobject ? (void *)bufferoffset : vertex3f);CHECKGLERROR
}
}
-void R_Mesh_ColorPointer(const float *color4f)
+void R_Mesh_ColorPointer(const float *color4f, int bufferobject, size_t bufferoffset)
{
- if (gl_state.pointer_color != color4f)
+ // note: this can not rely on bufferobject to decide whether a color array
+ // is supplied, because surfmesh_t shares one vbo for all arrays, which
+ // means that a valid vbo may be supplied even if there is no color array.
+ if (color4f)
{
- CHECKGLERROR
- if (!gl_state.pointer_color)
+ if (!gl_vbo.integer)
+ bufferobject = 0;
+ // caller wants color array enabled
+ if (!gl_state.pointer_color_enabled)
{
+ gl_state.pointer_color_enabled = true;
+ CHECKGLERROR
qglEnableClientState(GL_COLOR_ARRAY);CHECKGLERROR
}
- else if (!color4f)
+ if (gl_state.pointer_color != color4f || gl_state.pointer_color_buffer != bufferobject || gl_state.pointer_color_offset != bufferoffset)
{
+ gl_state.pointer_color = color4f;
+ gl_state.pointer_color_buffer = bufferobject;
+ gl_state.pointer_color_offset = bufferoffset;
+ CHECKGLERROR
+ GL_BindVBO(bufferobject);
+ qglColorPointer(4, GL_FLOAT, sizeof(float[4]), bufferobject ? (void *)bufferoffset : color4f);CHECKGLERROR
+ }
+ }
+ else
+ {
+ // caller wants color array disabled
+ if (gl_state.pointer_color_enabled)
+ {
+ gl_state.pointer_color_enabled = false;
+ CHECKGLERROR
qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
// when color array is on the glColor gets trashed, set it again
qglColor4f(gl_state.color4f[0], gl_state.color4f[1], gl_state.color4f[2], gl_state.color4f[3]);CHECKGLERROR
}
- gl_state.pointer_color = color4f;
- qglColorPointer(4, GL_FLOAT, sizeof(float[4]), gl_state.pointer_color);CHECKGLERROR
}
}
-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)
{
gltextureunit_t *unit = gl_state.units + unitnum;
// update array settings
CHECKGLERROR
+ // note: there is no need to check bufferobject here because all cases
+ // that involve a valid bufferobject also supply a texcoord array
if (texcoord)
{
- // texcoord array
- if (unit->pointer_texcoord != texcoord || unit->arraycomponents != numcomponents)
- {
- unit->pointer_texcoord = texcoord;
- unit->arraycomponents = numcomponents;
- GL_ClientActiveTexture(unitnum);
- qglTexCoordPointer(unit->arraycomponents, GL_FLOAT, sizeof(float) * unit->arraycomponents, unit->pointer_texcoord);CHECKGLERROR
- }
+ if (!gl_vbo.integer)
+ bufferobject = 0;
// texture array unit is enabled, enable the array
if (!unit->arrayenabled)
{
GL_ClientActiveTexture(unitnum);
qglEnableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
}
+ // texcoord array
+ if (unit->pointer_texcoord != texcoord || unit->pointer_texcoord_buffer != bufferobject || unit->pointer_texcoord_offset != bufferoffset || unit->arraycomponents != numcomponents)
+ {
+ unit->pointer_texcoord = texcoord;
+ unit->pointer_texcoord_buffer = bufferobject;
+ unit->pointer_texcoord_offset = bufferoffset;
+ unit->arraycomponents = numcomponents;
+ GL_ClientActiveTexture(unitnum);
+ GL_BindVBO(bufferobject);
+ qglTexCoordPointer(unit->arraycomponents, GL_FLOAT, sizeof(float) * unit->arraycomponents, bufferobject ? (void *)bufferoffset : texcoord);CHECKGLERROR
+ }
}
else
{
for (i = 0;i < backendarrayunits;i++)
{
if (m->pointer_texcoord3f[i])
- R_Mesh_TexCoordPointer(i, 3, m->pointer_texcoord3f[i]);
+ R_Mesh_TexCoordPointer(i, 3, m->pointer_texcoord3f[i], m->pointer_texcoord_bufferobject[i], m->pointer_texcoord_bufferoffset[i]);
else
- R_Mesh_TexCoordPointer(i, 2, m->pointer_texcoord[i]);
+ R_Mesh_TexCoordPointer(i, 2, m->pointer_texcoord[i], m->pointer_texcoord_bufferobject[i], m->pointer_texcoord_bufferoffset[i]);
}
for (i = 0;i < backendunits;i++)
{
projects / xonotic / darkplaces.git / blobdiff