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Fix floating point precision loss in renderer [part 1]

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Patch for https://bugzilla.icculus.org/show_bug.cgi?id=5931 by
Eugene C. from 2013 plus recent fix for tcMod rotate.

I merged the changes into the OpenGL2 renderer though the fix for
tcMod turb doesn't translate.
This commit is contained in:
Zack Middleton 2017-08-02 22:39:27 -05:00
parent 9c4c363ccc
commit 30fdd88c9f
8 changed files with 63 additions and 47 deletions
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18
code/renderergl1/tr_local.h
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@ -189,10 +189,10 @@ typedef enum {
typedef struct {
genFunc_t func;
float base;
float amplitude;
float phase;
float frequency;
double base;
double amplitude;
double phase;
double frequency;
} waveForm_t;
#define TR_MAX_TEXMODS 4
@ -252,7 +252,7 @@ typedef struct {
typedef struct {
image_t *image[MAX_IMAGE_ANIMATIONS];
int numImageAnimations;
float imageAnimationSpeed;
double imageAnimationSpeed;
texCoordGen_t tcGen;
vec3_t tcGenVectors[2];
@ -362,8 +362,8 @@ typedef struct shader_s {
void (*optimalStageIteratorFunc)( void );
float clampTime; // time this shader is clamped to
float timeOffset; // current time offset for this shader
double clampTime; // time this shader is clamped to
double timeOffset; // current time offset for this shader
struct shader_s *remappedShader; // current shader this one is remapped too
@ -388,7 +388,7 @@ typedef struct {
byte areamask[MAX_MAP_AREA_BYTES];
qboolean areamaskModified; // qtrue if areamask changed since last scene
float floatTime; // tr.refdef.time / 1000.0
double floatTime; // tr.refdef.time / 1000.0
// text messages for deform text shaders
char text[MAX_RENDER_STRINGS][MAX_RENDER_STRING_LENGTH];
@ -1217,7 +1217,7 @@ typedef struct shaderCommands_s
color4ub_t constantColor255[SHADER_MAX_VERTEXES] QALIGN(16);
shader_t *shader;
float shaderTime;
double shaderTime;
int fogNum;
int dlightBits; // or together of all vertexDlightBits