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opengl.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "oglfunc.h"
#include "fixer.h"
#include "3dc.h"
#include "platform.h"
#include "inline.h"
#include "module.h"
#include "stratdef.h"
#include "projfont.h"
#include "kshape.h"
#include "prototyp.h"
#include "frustum.h"
#include "lighting.h"
#include "bh_types.h"
#include "showcmds.h"
#include "d3d_hud.h"
#include "hud_layout.h"
#include "avp_userprofile.h"
#include "aw.h"
#include "opengl.h"
int LightIntensityAtPoint(VECTORCH *pointPtr);
extern IMAGEHEADER ImageHeaderArray[];
extern VIEWDESCRIPTORBLOCK *Global_VDB_Ptr;
extern unsigned char GammaValues[256];
extern SCREENDESCRIPTORBLOCK ScreenDescriptorBlock;
extern int SpecialFXImageNumber;
extern int StaticImageNumber;
extern int PredatorNumbersImageNumber;
extern int BurningImageNumber;
extern int ChromeImageNumber;
extern int WaterShaftImageNumber;
extern int HUDFontsImageNumber;
extern int AAFontImageNumber;
extern int FMVParticleColour;
extern int HUDScaleFactor;
extern int CloakingPhase;
static D3DTexture *CurrTextureHandle;
static enum TRANSLUCENCY_TYPE CurrentTranslucencyMode = TRANSLUCENCY_OFF;
static enum FILTERING_MODE_ID CurrentFilteringMode = FILTERING_BILINEAR_OFF;
static GLenum TextureMinFilter = GL_LINEAR_MIPMAP_LINEAR;
static D3DTexture *CurrentlyBoundTexture = NULL;
#if defined(_MSC_VER)
#define ALIGN16 __declspec(align(16))
#else
#define ALIGN16 __attribute__((__aligned__(16)))
#endif
// need to look into this again at some point
// everything but the hud rendering used an offset
#define TEXCOORD_FIXED(s, r) (((float)((s)+(0<<15))) * (r))
#define TA_MAXVERTICES 2048
#define TA_MAXTRIANGLES 2048
typedef struct VertexArray
{
GLfloat v[4];
GLfloat t[2];
GLubyte c[4];
GLubyte s[4];
} VertexArray;
typedef struct TriangleArray
{
unsigned short a;
unsigned short b;
unsigned short c;
} TriangleArray;
static ALIGN16 VertexArray varr[TA_MAXVERTICES];
static ALIGN16 TriangleArray tarr[TA_MAXTRIANGLES];
static VertexArray *varrp = varr;
static TriangleArray *tarrp = tarr;
static int varrc, tarrc;
static ALIGN16 TriangleArray starr[TA_MAXTRIANGLES];
static TriangleArray *starrp = starr;
static int starrc;
/* Do not call this directly! */
static void SetTranslucencyMode(enum TRANSLUCENCY_TYPE mode)
{
pglDisable(GL_ALPHA_TEST);
switch(mode) {
case TRANSLUCENCY_OFF:
if (TRIPTASTIC_CHEATMODE||MOTIONBLUR_CHEATMODE) {
pglBlendFunc(GL_ONE_MINUS_SRC_ALPHA, GL_SRC_ALPHA);
} else {
// alien tail hack
pglEnable(GL_ALPHA_TEST);
pglBlendFunc(GL_ONE, GL_ZERO);
}
break;
case TRANSLUCENCY_NORMAL:
pglBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
break;
case TRANSLUCENCY_COLOUR:
pglBlendFunc(GL_ZERO, GL_SRC_COLOR);
break;
case TRANSLUCENCY_INVCOLOUR:
pglBlendFunc(GL_ZERO, GL_ONE_MINUS_SRC_COLOR);
break;
case TRANSLUCENCY_GLOWING:
pglBlendFunc(GL_SRC_ALPHA, GL_ONE);
break;
case TRANSLUCENCY_DARKENINGCOLOUR:
pglBlendFunc(GL_ONE_MINUS_DST_COLOR, GL_ZERO);
break;
case TRANSLUCENCY_JUSTSETZ:
pglBlendFunc(GL_ZERO, GL_ONE);
break;
default:
fprintf(stderr, "SetTranslucencyMode: invalid blend mode %d\n", mode);
break;
}
}
static void SetSecondPassTranslucencyMode(enum TRANSLUCENCY_TYPE mode)
{
pglDisable(GL_ALPHA_TEST);
switch(mode) {
case TRANSLUCENCY_OFF:
if (TRIPTASTIC_CHEATMODE||MOTIONBLUR_CHEATMODE) {
pglBlendFunc(GL_ONE_MINUS_SRC_ALPHA, GL_ONE);
} else {
pglBlendFunc(GL_ONE, GL_ONE);
}
break;
case TRANSLUCENCY_NORMAL:
pglBlendFunc(GL_SRC_ALPHA, GL_ONE);
break;
case TRANSLUCENCY_GLOWING:
pglBlendFunc(GL_SRC_ALPHA, GL_ONE);
break;
case TRANSLUCENCY_COLOUR:
//fprintf(stderr, "SetSecondPassTranslucencyMode: unsupported blend mode %d\n", mode);
// can't easily emulate this one
pglBlendFunc(GL_DST_COLOR, GL_ONE);
break;
case TRANSLUCENCY_INVCOLOUR:
//fprintf(stderr, "SetSecondPassTranslucencyMode: unsupported blend mode %d\n", mode);
// can't easily emulate this one
pglBlendFunc(GL_ONE_MINUS_DST_COLOR, GL_ONE);
break;
case TRANSLUCENCY_DARKENINGCOLOUR:
case TRANSLUCENCY_JUSTSETZ:
fprintf(stderr, "SetSecondPassTranslucencyMode: unsupported blend mode %d\n", mode);
pglBlendFunc(GL_SRC_ALPHA, GL_ONE);
break;
default:
fprintf(stderr, "SetSecondPassTranslucencyMode: invalid blend mode %d\n", mode);
break;
}
}
/*
A few things:
- Vertices with a specular color are done twice.
Might want to try spitting apart the three arrays and using the same vertex
array for both passes.
- Fix code for separate color support.
*/
void InitOpenGL()
{
pglHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST );
pglHint( GL_GENERATE_MIPMAP_HINT, GL_NICEST );
#if GL_NV_multisample_filter_hint
if ( ogl_use_multisample_filter_hint )
{
pglHint( GL_MULTISAMPLE_FILTER_HINT_NV, GL_NICEST );
}
#endif
CurrentTranslucencyMode = TRANSLUCENCY_OFF;
pglBlendFunc(GL_ONE, GL_ZERO);
pglAlphaFunc(GL_GREATER, 0.0f);
CurrentFilteringMode = FILTERING_BILINEAR_OFF;
pglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
pglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
CurrentlyBoundTexture = NULL;
pglBindTexture(GL_TEXTURE_2D, 0);
pglEnableClientState(GL_VERTEX_ARRAY);
pglVertexPointer(4, GL_FLOAT, sizeof(varr[0]), varr[0].v);
pglEnableClientState(GL_TEXTURE_COORD_ARRAY);
pglTexCoordPointer(2, GL_FLOAT, sizeof(varr[0]), varr[0].t);
pglEnableClientState(GL_COLOR_ARRAY);
pglColorPointer(4, GL_UNSIGNED_BYTE, sizeof(varr[0]), varr[0].c);
tarrc = 0;
tarrp = tarr;
varrc = 0;
varrp = varr;
starrc = 0;
starrp = starr;
}
static void FlushTriangleBuffers(int backup)
{
if (tarrc) {
pglDrawElements(GL_TRIANGLES, tarrc*3, GL_UNSIGNED_SHORT, tarr);
tarrc = 0;
tarrp = tarr;
varrc = 0;
varrp = varr;
}
if (starrc) {
//if (CurrentlyBoundTexture != NULL) {
// if (!backup) CurrentlyBoundTexture = NULL;
// pglBindTexture(GL_TEXTURE_2D, 0);
//}
//if (CurrentTranslucencyMode != TRANSLUCENCY_GLOWING) {
// if (!backup) CurrentTranslucencyMode = TRANSLUCENCY_GLOWING;
// SetTranslucencyMode(TRANSLUCENCY_GLOWING);
// //if (CurrentTranslucencyMode == TRANSLUCENCY_OFF)
// // pglEnable(GL_BLEND);
// //glBlendFunc(GL_SRC_ALPHA, GL_ONE);
//}
SetSecondPassTranslucencyMode(CurrentTranslucencyMode);
pglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
pglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_REPLACE);
pglTexEnvi(GL_TEXTURE_ENV, GL_SRC0_RGB, GL_PRIMARY_COLOR);
pglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_SRC_COLOR);
pglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_MODULATE);
pglTexEnvi(GL_TEXTURE_ENV, GL_SRC0_ALPHA, GL_TEXTURE);
pglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA, GL_SRC_ALPHA);
pglTexEnvi(GL_TEXTURE_ENV, GL_SRC1_ALPHA, GL_PRIMARY_COLOR);
pglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA, GL_SRC_ALPHA);
//pglDisableClientState(GL_TEXTURE_COORD_ARRAY);
pglColorPointer(4, GL_UNSIGNED_BYTE, sizeof(varr[0]), varr[0].s);
pglDrawElements(GL_TRIANGLES, starrc*3, GL_UNSIGNED_SHORT, starr);
//pglEnableClientState(GL_TEXTURE_COORD_ARRAY);
pglColorPointer(4, GL_UNSIGNED_BYTE, sizeof(varr[0]), varr[0].c);
//if (backup) {
// //if (CurrentlyBoundTexture)
// // pglBindTexture(GL_TEXTURE_2D, CurrentlyBoundTexture->id);
// if (CurrentTranslucencyMode != TRANSLUCENCY_GLOWING)
// SetTranslucencyMode(CurrentTranslucencyMode);
//} else {
// //CurrentlyBoundTexture = NULL;
// CurrentTranslucencyMode = TRANSLUCENCY_GLOWING;
//}
SetTranslucencyMode(CurrentTranslucencyMode);
pglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
starrc = 0;
starrp = starr;
}
}
static void CheckBoundTextureIsCorrect(D3DTexture *tex)
{
if (tex == CurrentlyBoundTexture)
return;
FlushTriangleBuffers(1);
if (tex == NULL) {
pglBindTexture(GL_TEXTURE_2D, 0);
CurrentlyBoundTexture = NULL;
return;
}
pglBindTexture(GL_TEXTURE_2D, tex->id);
if (tex->filter != CurrentFilteringMode) {
switch(CurrentFilteringMode) {
case FILTERING_BILINEAR_OFF:
pglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
pglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
break;
case FILTERING_BILINEAR_ON:
pglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
pglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, TextureMinFilter);
break;
default:
break;
}
tex->filter = CurrentFilteringMode;
}
CurrentlyBoundTexture = tex;
}
static void CheckFilteringModeIsCorrect(enum FILTERING_MODE_ID filter)
{
CurrentFilteringMode = filter;
if (CurrentlyBoundTexture && CurrentlyBoundTexture->filter != CurrentFilteringMode) {
FlushTriangleBuffers(1);
switch(CurrentFilteringMode) {
case FILTERING_BILINEAR_OFF:
pglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
pglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
break;
case FILTERING_BILINEAR_ON:
pglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
pglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, TextureMinFilter);
break;
default:
break;
}
CurrentlyBoundTexture->filter = CurrentFilteringMode;
}
}
static void CheckTranslucencyModeIsCorrect(enum TRANSLUCENCY_TYPE mode)
{
if (CurrentTranslucencyMode == mode)
return;
FlushTriangleBuffers(1);
SetTranslucencyMode(mode);
CurrentTranslucencyMode = mode;
}
static void CheckTriangleBuffer(int rver, int sver, int rtri, int stri, D3DTexture *tex, enum TRANSLUCENCY_TYPE mode, enum FILTERING_MODE_ID filter)
{
if ((rver+varrc) >= TA_MAXVERTICES) {
FlushTriangleBuffers(0);
} else if (rtri == 0 && ((rver-2+tarrc) >= TA_MAXTRIANGLES)) {
FlushTriangleBuffers(0);
} else if (rtri && ((rtri+tarrc) >= TA_MAXTRIANGLES)) {
FlushTriangleBuffers(0);
}
if ((intptr_t)tex != -1)
CheckBoundTextureIsCorrect(tex);
if (mode != -1)
CheckTranslucencyModeIsCorrect(mode);
if (filter != -1)
CheckFilteringModeIsCorrect(filter);
#define OUTPUT_TRIANGLE(x, y, z) \
{ \
tarrp->a = varrc+(x); \
tarrp->b = varrc+(y); \
tarrp->c = varrc+(z); \
\
tarrp++; \
tarrc++; \
}
if (rtri == 0) {
switch(rver) {
case 0:
break;
case 3:
OUTPUT_TRIANGLE(0, 2, 1);
break;
case 5:
OUTPUT_TRIANGLE(0, 1, 4);
OUTPUT_TRIANGLE(1, 3, 4);
OUTPUT_TRIANGLE(1, 2, 3);
break;
case 8:
OUTPUT_TRIANGLE(0, 6, 7);
case 7:
OUTPUT_TRIANGLE(0, 5, 6);
case 6:
OUTPUT_TRIANGLE(0, 4, 5);
OUTPUT_TRIANGLE(0, 3, 4);
case 4:
OUTPUT_TRIANGLE(0, 2, 3);
OUTPUT_TRIANGLE(0, 1, 2);
break;
default:
fprintf(stderr, "DrawTriangles_T2F_C4UB_V4F: vertices = %d\n", rver);
}
}
#undef OUTPUT_TRIANGLE
#define OUTPUT_TRIANGLE(x, y, z) \
{ \
starrp->a = varrc+(x); \
starrp->b = varrc+(y); \
starrp->c = varrc+(z); \
\
starrp++; \
starrc++; \
}
if (stri == 0) {
switch(sver) {
case 0:
break;
case 3:
OUTPUT_TRIANGLE(0, 2, 1);
break;
case 5:
OUTPUT_TRIANGLE(0, 1, 4);
OUTPUT_TRIANGLE(1, 3, 4);
OUTPUT_TRIANGLE(1, 2, 3);
break;
case 8:
OUTPUT_TRIANGLE(0, 6, 7);
case 7:
OUTPUT_TRIANGLE(0, 5, 6);
case 6:
OUTPUT_TRIANGLE(0, 4, 5);
OUTPUT_TRIANGLE(0, 3, 4);
case 4:
OUTPUT_TRIANGLE(0, 2, 3);
OUTPUT_TRIANGLE(0, 1, 2);
break;
default:
fprintf(stderr, "DrawTriangles_T2F_C4UB_V4F: vertices = %d\n", sver);
}
}
#undef OUTPUT_TRIANGLE
}
static unsigned int PowerOfTwo(unsigned int v) {
v--;
v |= v >> 1;
v |= v >> 2;
v |= v >> 4;
v |= v >> 8;
v |= v >> 16;
return v + 1;
}
GLuint CreateOGLTexture(D3DTexture *tex, unsigned char *buf)
{
if (buf == NULL) {
// converting DDSurface to D3DTexture
buf = tex->buf;
}
if (buf == NULL) {
fprintf(stderr, "CreateOGLTexture - null buffer\n");
return 0;
}
int i;
int l = tex->w * tex->h;
for (i = 0; i < l; i++) {
int o = i*4;
int r = buf[o+0];
int g = buf[o+1];
int b = buf[o+2];
int a = buf[o+3];
// kinda pre-multiplied alpha;
// texels with zero alpha shouldn't
// be visible.
if (a == 0) {
r = 0;
g = 0;
b = 0;
}
buf[o+0] = r;
buf[o+1] = g;
buf[o+2] = b;
buf[o+3] = a;
}
tex->TexWidth = tex->w;
tex->TexHeight = tex->h;
int PotWidth = PowerOfTwo(tex->TexWidth);
int PotHeight = PowerOfTwo(tex->TexHeight);
tex->IsNpot = (PotWidth != tex->TexWidth) || (PotHeight != tex->TexHeight);
GLuint h;
GLfloat max_anisotropy;
FlushTriangleBuffers(1);
pglGenTextures(1, &h);
pglBindTexture(GL_TEXTURE_2D, h);
pglTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
pglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
pglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
if (tex->IsNpot) {
// OpenGL 1.x compatibility
tex->TexWidth = PotWidth;
tex->TexHeight = PotHeight;
pglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
pglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
pglTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, tex->TexWidth, tex->TexHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
pglTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, tex->w, tex->h, GL_RGBA, GL_UNSIGNED_BYTE, buf);
} else {
pglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
if (tex->IsNpot) {
pglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
} else {
pglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, TextureMinFilter);
}
pglTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, tex->w, tex->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, buf);
}
pglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
tex->buf = NULL;
tex->id = h;
tex->filter = FILTERING_BILINEAR_ON;
tex->RecipW = 1.0f / (float) tex->TexWidth;
tex->RecipH = 1.0f / (float) tex->TexHeight;
if ( ogl_use_texture_filter_anisotropic )
{
pglGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &max_anisotropy);
pglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, max_anisotropy);
}
if ( CurrentlyBoundTexture != NULL )
{
/* restore the previously-bound texture */
pglBindTexture(GL_TEXTURE_2D, CurrentlyBoundTexture->id);
}
free(buf);
return h;
}
void ReleaseD3DTexture(void *tex)
{
D3DTexture *TextureHandle = (D3DTexture *)tex;
if (TextureHandle == NULL) {
return;
}
if (TextureHandle->id != 0) {
pglDeleteTextures(1, (GLuint*) &(TextureHandle->id));
TextureHandle->id = 0;
}
if (TextureHandle->buf != NULL) {
free(TextureHandle->buf);
TextureHandle->buf = NULL;
}
free(TextureHandle);
}
int CreateIMGSurface(D3DTexture *tex, unsigned char *buf)
{
tex->buf = buf;
tex->id = 0;
return 0;
}
void ReleaseDDSurface(void* DDSurface)
{
ReleaseD3DTexture(DDSurface);
}
/* ** */
void ThisFramesRenderingHasBegun()
{
CheckFilteringModeIsCorrect(FILTERING_BILINEAR_ON);
}
void ThisFramesRenderingHasFinished()
{
LightBlockDeallocation();
FlushTriangleBuffers(0);
}
/* ** */
void FlushD3DZBuffer()
{
pglClear(GL_DEPTH_BUFFER_BIT);
}
void SecondFlushD3DZBuffer()
{
FlushTriangleBuffers(0);
pglClear(GL_DEPTH_BUFFER_BIT);
}
void D3D_DecalSystem_Setup()
{
FlushTriangleBuffers(0);
pglDepthMask(GL_FALSE);
/* enable polygon offset to help lessen decal z-fighting... */
pglEnable(GL_POLYGON_OFFSET_FILL);
static GLfloat factor = 0.0f;
static GLfloat units = -0.09375f;
pglPolygonOffset(factor, units);
}
void D3D_DecalSystem_End()
{
FlushTriangleBuffers(0);
pglDepthMask(GL_TRUE);
pglDisable(GL_POLYGON_OFFSET_FILL);
}
/* ** */
void D3D_Rectangle(int x0, int y0, int x1, int y1, int r, int g, int b, int a)
{
GLfloat x[4], y[4];
int i;
if (y1 <= y0)
return;
CheckTriangleBuffer(4, 0, 0, 0, NULL, TRANSLUCENCY_GLOWING, -1);
x[0] = x0;
x[0] = (x[0] - ScreenDescriptorBlock.SDB_CentreX)/ScreenDescriptorBlock.SDB_CentreX;
y[0] = y0;
y[0] = -(y[0] - ScreenDescriptorBlock.SDB_CentreY)/ScreenDescriptorBlock.SDB_CentreY;
x[1] = x1 - 1;
x[1] = (x[1] - ScreenDescriptorBlock.SDB_CentreX)/ScreenDescriptorBlock.SDB_CentreX;
y[1] = y0;
y[1] = -(y[1] - ScreenDescriptorBlock.SDB_CentreY)/ScreenDescriptorBlock.SDB_CentreY;
x[2] = x1 - 1;
x[2] = (x[2] - ScreenDescriptorBlock.SDB_CentreX)/ScreenDescriptorBlock.SDB_CentreX;
y[2] = y1 - 1;
y[2] = -(y[2] - ScreenDescriptorBlock.SDB_CentreY)/ScreenDescriptorBlock.SDB_CentreY;
x[3] = x0;
x[3] = (x[3] - ScreenDescriptorBlock.SDB_CentreX)/ScreenDescriptorBlock.SDB_CentreX;
y[3] = y1 - 1;
y[3] = -(y[3] - ScreenDescriptorBlock.SDB_CentreY)/ScreenDescriptorBlock.SDB_CentreY;
for (i = 0; i < 4; i++) {
varrp->v[0] = x[i];
varrp->v[1] = y[i];
varrp->v[2] = -1.0f;
varrp->v[3] = 1.0f;
varrp->t[0] = 0.0f;
varrp->t[1] = 0.0f;
varrp->c[0] = r;
varrp->c[1] = g;
varrp->c[2] = b;
varrp->c[3] = a;
varrp->s[0] = 0;
varrp->s[1] = 0;
varrp->s[2] = 0;
varrp->s[3] = 0;
varrp++;
varrc++;
}
}
/* ** */
void D3D_ZBufferedGouraudTexturedPolygon_Output(POLYHEADER *inputPolyPtr, RENDERVERTEX *renderVerticesPtr)
{
int texoffset;
D3DTexture *TextureHandle;
int i;
GLfloat ZNear;
float RecipW, RecipH;
ZNear = (GLfloat) (Global_VDB_Ptr->VDB_ClipZ * GlobalScale);
texoffset = inputPolyPtr->PolyColour & ClrTxDefn;
if (texoffset) {
TextureHandle = (void *)ImageHeaderArray[texoffset].D3DTexture;
CurrTextureHandle = TextureHandle;
} else {
TextureHandle = CurrTextureHandle;
}
RecipW = TextureHandle->RecipW / 65536.0f;
RecipH = TextureHandle->RecipH / 65536.0f;
CheckTriangleBuffer(RenderPolygon.NumberOfVertices, RenderPolygon.NumberOfVertices, 0, 0, TextureHandle, RenderPolygon.TranslucencyMode, -1);
for (i = 0; i < RenderPolygon.NumberOfVertices; i++) {
RENDERVERTEX *vertices = &renderVerticesPtr[i];
GLfloat x, y, z;
GLfloat s, t;
GLfloat w = (float)vertices->Z;
GLfloat zvalue;
s = TEXCOORD_FIXED(vertices->U, RecipW);
t = TEXCOORD_FIXED(vertices->V, RecipH);
x = ((float)vertices->X*((float)Global_VDB_Ptr->VDB_ProjX+1.0f))/((float)vertices->Z*(float)ScreenDescriptorBlock.SDB_CentreX);
y = -((float)vertices->Y*((float)Global_VDB_Ptr->VDB_ProjY+1.0f))/((float)vertices->Z*(float)ScreenDescriptorBlock.SDB_CentreY);
zvalue = vertices->Z+HeadUpDisplayZOffset;
z = 1.0f - 2.0f*ZNear/zvalue;
varrp->v[0] = x*w;
varrp->v[1] = y*w;
varrp->v[2] = z*w;
varrp->v[3] = w;
varrp->t[0] = s;
varrp->t[1] = t;
varrp->c[0] = GammaValues[vertices->R];
varrp->c[1] = GammaValues[vertices->G];
varrp->c[2] = GammaValues[vertices->B];
varrp->c[3] = vertices->A;
varrp->s[0] = GammaValues[vertices->SpecularR];
varrp->s[1] = GammaValues[vertices->SpecularG];
varrp->s[2] = GammaValues[vertices->SpecularB];
varrp->s[3] = vertices->A;
varrp++;
varrc++;
}
}
void D3D_SkyPolygon_Output(POLYHEADER *inputPolyPtr, RENDERVERTEX *renderVerticesPtr)
{
int texoffset;
D3DTexture *TextureHandle;
int i;
float RecipW, RecipH;
texoffset = inputPolyPtr->PolyColour & ClrTxDefn;
TextureHandle = (void *)ImageHeaderArray[texoffset].D3DTexture;
CurrTextureHandle = TextureHandle;
RecipW = TextureHandle->RecipW / 65536.0f;
RecipH = TextureHandle->RecipH / 65536.0f;
CheckTriangleBuffer(RenderPolygon.NumberOfVertices, 0, 0, 0, TextureHandle, RenderPolygon.TranslucencyMode, -1);
for (i = 0; i < RenderPolygon.NumberOfVertices; i++) {
RENDERVERTEX *vertices = &renderVerticesPtr[i];
GLfloat x, y, z;
GLfloat s, t;
GLfloat w;
w = (float)vertices->Z;
s = TEXCOORD_FIXED(vertices->U, RecipW);
t = TEXCOORD_FIXED(vertices->V, RecipH);
x = ((float)vertices->X*((float)Global_VDB_Ptr->VDB_ProjX+1.0f))/((float)vertices->Z*(float)ScreenDescriptorBlock.SDB_CentreX);
y = -((float)vertices->Y*((float)Global_VDB_Ptr->VDB_ProjY+1.0f))/((float)vertices->Z*(float)ScreenDescriptorBlock.SDB_CentreY);
z = 1.0f;
varrp->v[0] = x*w;
varrp->v[1] = y*w;
varrp->v[2] = z*w;
varrp->v[3] = w;
varrp->t[0] = s;
varrp->t[1] = t;
varrp->c[0] = vertices->R;
varrp->c[1] = vertices->G;
varrp->c[2] = vertices->B;
varrp->c[3] = vertices->A;
varrp->s[0] = 0;
varrp->s[1] = 0;
varrp->s[2] = 0;
varrp->s[3] = 0;
varrp++;
varrc++;
}
}
void D3D_ZBufferedCloakedPolygon_Output(POLYHEADER *inputPolyPtr, RENDERVERTEX *renderVerticesPtr)
{
int flags;
int texoffset;
int i;
D3DTexture *TextureHandle;
float ZNear;
float RecipW, RecipH;
ZNear = (float) (Global_VDB_Ptr->VDB_ClipZ * GlobalScale);
flags = inputPolyPtr->PolyFlags;
texoffset = (inputPolyPtr->PolyColour & ClrTxDefn);
TextureHandle = ImageHeaderArray[texoffset].D3DTexture;
CurrTextureHandle = TextureHandle;
RecipW = TextureHandle->RecipW / 65536.0f;
RecipH = TextureHandle->RecipH / 65536.0f;
CheckTriangleBuffer(RenderPolygon.NumberOfVertices, 0, 0, 0, TextureHandle, TRANSLUCENCY_NORMAL, -1);
for (i = 0; i < RenderPolygon.NumberOfVertices; i++) {
RENDERVERTEX *vertices = &renderVerticesPtr[i];
GLfloat x, y, z;
GLfloat s, t;
GLfloat w;
GLfloat zvalue;
w = (float)vertices->Z;
s = TEXCOORD_FIXED(vertices->U, RecipW);
t = TEXCOORD_FIXED(vertices->V, RecipH);
x = ((float)vertices->X*((float)Global_VDB_Ptr->VDB_ProjX+1.0f))/((float)vertices->Z*(float)ScreenDescriptorBlock.SDB_CentreX);
y = -((float)vertices->Y*((float)Global_VDB_Ptr->VDB_ProjY+1.0f))/((float)vertices->Z*(float)ScreenDescriptorBlock.SDB_CentreY);
zvalue = vertices->Z+HeadUpDisplayZOffset;
z = 1.0 - 2*ZNear/zvalue;
varrp->v[0] = x*w;
varrp->v[1] = y*w;
varrp->v[2] = z*w;
varrp->v[3] = w;
varrp->t[0] = s;
varrp->t[1] = t;
varrp->c[0] = vertices->R;
varrp->c[1] = vertices->G;
varrp->c[2] = vertices->B;
varrp->c[3] = vertices->A;
varrp->s[0] = 0;
varrp->s[1] = 0;
varrp->s[2] = 0;
varrp->s[3] = 0;
varrp++;
varrc++;
}
}
void D3D_Decal_Output(DECAL *decalPtr, RENDERVERTEX *renderVerticesPtr)
{
DECAL_DESC *decalDescPtr = &DecalDescription[decalPtr->DecalID];
int texoffset;
D3DTexture *TextureHandle;
int i;
float ZNear;
float RecipW, RecipH;
int r, g, b, a;
ZNear = (float) (Global_VDB_Ptr->VDB_ClipZ * GlobalScale);
if (decalPtr->DecalID == DECAL_FMV) {
/* not (yet) implemented */
return;
} else if (decalPtr->DecalID == DECAL_SHAFTOFLIGHT||decalPtr->DecalID == DECAL_SHAFTOFLIGHT_OUTER) {
TextureHandle = NULL;
RecipW = 1.0 / 256.0; /* ignored */
RecipH = 1.0 / 256.0;
} else {
texoffset = SpecialFXImageNumber;
TextureHandle = ImageHeaderArray[texoffset].D3DTexture;
RecipW = TextureHandle->RecipW / 65536.0f;
RecipH = TextureHandle->RecipH / 65536.0f;
}
if (decalDescPtr->IsLit) {
int intensity = LightIntensityAtPoint(decalPtr->Vertices);
r = MUL_FIXED(intensity,decalDescPtr->RedScale[CurrentVisionMode]);
g = MUL_FIXED(intensity,decalDescPtr->GreenScale[CurrentVisionMode]);
b = MUL_FIXED(intensity,decalDescPtr->BlueScale[CurrentVisionMode]);
a = decalDescPtr->Alpha;
} else {
r = decalDescPtr->RedScale[CurrentVisionMode];
g = decalDescPtr->GreenScale[CurrentVisionMode];
b = decalDescPtr->BlueScale[CurrentVisionMode];
a = decalDescPtr->Alpha;
}
if (RAINBOWBLOOD_CHEATMODE) {
r = FastRandom()&255;
g = FastRandom()&255;
b = FastRandom()&255;
a = decalDescPtr->Alpha;
}
CheckTriangleBuffer(RenderPolygon.NumberOfVertices, 0, 0, 0, TextureHandle, decalDescPtr->TranslucencyType, -1);
for (i = 0; i < RenderPolygon.NumberOfVertices; i++) {
RENDERVERTEX *vertices = &renderVerticesPtr[i];
GLfloat x, y, z, zvalue;
GLfloat s, t;
GLfloat w;
w = (float)vertices->Z;
x = ((float)vertices->X*((float)Global_VDB_Ptr->VDB_ProjX+1.0f))/((float)vertices->Z*(float)ScreenDescriptorBlock.SDB_CentreX);
y = -((float)vertices->Y*((float)Global_VDB_Ptr->VDB_ProjY+1.0f))/((float)vertices->Z*(float)ScreenDescriptorBlock.SDB_CentreY);
s = TEXCOORD_FIXED(vertices->U, RecipW);
t = TEXCOORD_FIXED(vertices->V, RecipH);
zvalue = vertices->Z+HeadUpDisplayZOffset;
z = 1.0f - 2.0f*ZNear/zvalue;
varrp->v[0] = x*w;
varrp->v[1] = y*w;
varrp->v[2] = z*w;
varrp->v[3] = w;
varrp->t[0] = s;
varrp->t[1] = t;
varrp->c[0] = r;
varrp->c[1] = g;
varrp->c[2] = b;
varrp->c[3] = a;
varrp->s[0] = 0;
varrp->s[1] = 0;
varrp->s[2] = 0;
varrp->s[3] = 0;
varrp++;
varrc++;
}
}
void D3D_Particle_Output(PARTICLE *particlePtr, RENDERVERTEX *renderVerticesPtr)
{
PARTICLE_DESC *particleDescPtr = &ParticleDescription[particlePtr->ParticleID];
int texoffset = SpecialFXImageNumber;
GLfloat ZNear;
int i;
float RecipW, RecipH;
int r, g, b, a;
D3DTexture *TextureHandle;