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Add functions to set near and far culling planes.

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This commit is contained in:
Jeffery Myers 2021-02-02 10:02:40 -08:00
parent 005bc4c414
commit 32f5875cb7
4 changed files with 29 additions and 16 deletions
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4
src/config.h
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@ -95,8 +95,8 @@
#define MAX_SHADER_LOCATIONS 32 // Maximum number of shader locations supported
#define MAX_MATERIAL_MAPS 12 // Maximum number of shader maps supported
#define RL_CULL_DISTANCE_NEAR 0.01 // Default projection matrix near cull distance
#define RL_CULL_DISTANCE_FAR 1000.0 // Default projection matrix far cull distance
#define RL_DEFAULT_CULL_DISTANCE_NEAR 0.01 // Default projection matrix near cull distance
#define RL_DEFAULT_CULL_DISTANCE_FAR 1000.0 // Default projection matrix far cull distance
// Default shader vertex attribute names to set location points
#define DEFAULT_SHADER_ATTRIB_NAME_POSITION "vertexPosition" // Binded by default to shader location: 0

21
src/core.c
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@ -484,6 +484,9 @@ static CoreData CORE = { 0 }; // Global CORE state context
static char **dirFilesPath = NULL; // Store directory files paths as strings
static int dirFilesCount = 0; // Count directory files strings
static double cullDistanceNear = RL_DEFAULT_CULL_DISTANCE_NEAR; // Default projection matrix near cull distance
static double cullDistanceFar = RL_DEFAULT_CULL_DISTANCE_FAR; // Default projection matrix far cull distance
#if defined(SUPPORT_SCREEN_CAPTURE)
static int screenshotCounter = 0; // Screenshots counter
#endif
@ -1891,10 +1894,10 @@ void BeginMode3D(Camera3D camera)
if (camera.type == CAMERA_PERSPECTIVE)
{
// Setup perspective projection
double top = RL_CULL_DISTANCE_NEAR*tan(camera.fovy*0.5*DEG2RAD);
double top = cullDistanceNear*tan(camera.fovy*0.5*DEG2RAD);
double right = top*aspect;
rlFrustum(-right, right, -top, top, RL_CULL_DISTANCE_NEAR, RL_CULL_DISTANCE_FAR);
rlFrustum(-right, right, -top, top, cullDistanceNear, cullDistanceFar);
}
else if (camera.type == CAMERA_ORTHOGRAPHIC)
{
@ -1902,7 +1905,7 @@ void BeginMode3D(Camera3D camera)
double top = camera.fovy/2.0;
double right = top*aspect;
rlOrtho(-right, right, -top,top, RL_CULL_DISTANCE_NEAR, RL_CULL_DISTANCE_FAR);
rlOrtho(-right, right, -top,top, cullDistanceNear, cullDistanceFar);
}
// NOTE: zNear and zFar values are important when computing depth buffer values
@ -2015,7 +2018,7 @@ Ray GetMouseRay(Vector2 mouse, Camera camera)
if (camera.type == CAMERA_PERSPECTIVE)
{
// Calculate projection matrix from perspective
matProj = MatrixPerspective(camera.fovy*DEG2RAD, ((double)GetScreenWidth()/(double)GetScreenHeight()), RL_CULL_DISTANCE_NEAR, RL_CULL_DISTANCE_FAR);
matProj = MatrixPerspective(camera.fovy*DEG2RAD, ((double)GetScreenWidth()/(double)GetScreenHeight()), cullDistanceNear, cullDistanceFar);
}
else if (camera.type == CAMERA_ORTHOGRAPHIC)
{
@ -2099,7 +2102,7 @@ Vector2 GetWorldToScreenEx(Vector3 position, Camera camera, int width, int heigh
if (camera.type == CAMERA_PERSPECTIVE)
{
// Calculate projection matrix from perspective
matProj = MatrixPerspective(camera.fovy * DEG2RAD, ((double)width/(double)height), RL_CULL_DISTANCE_NEAR, RL_CULL_DISTANCE_FAR);
matProj = MatrixPerspective(camera.fovy * DEG2RAD, ((double)width/(double)height), cullDistanceNear, cullDistanceFar);
}
else if (camera.type == CAMERA_ORTHOGRAPHIC)
{
@ -2108,7 +2111,7 @@ Vector2 GetWorldToScreenEx(Vector3 position, Camera camera, int width, int heigh
double right = top*aspect;
// Calculate projection matrix from orthographic
matProj = MatrixOrtho(-right, right, -top, top, RL_CULL_DISTANCE_NEAR, RL_CULL_DISTANCE_FAR);
matProj = MatrixOrtho(-right, right, -top, top, cullDistanceNear, cullDistanceFar);
}
// Calculate view matrix from camera look at (and transpose it)
@ -2150,6 +2153,12 @@ Vector2 GetScreenToWorld2D(Vector2 position, Camera2D camera)
return (Vector2){ transform.x, transform.y };
}
void SetCullingPlanes(double near, double far)
{
cullDistanceFar = far;
cullDistanceNear = near;
}
// Set target FPS (maximum)
void SetTargetFPS(int fps)
{

4
src/raylib.h
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@ -965,6 +965,9 @@ RLAPI int GetFPS(void); // Returns cur
RLAPI float GetFrameTime(void); // Returns time in seconds for last frame drawn
RLAPI double GetTime(void); // Returns elapsed time in seconds since InitWindow()
// culling plane functions
RLAPI void SetCullingPlanes(double near, double far);
// Misc. functions
RLAPI void SetConfigFlags(unsigned int flags); // Setup init configuration flags (view FLAGS)
@ -1081,6 +1084,7 @@ RLAPI void SetCameraAltControl(int keyAlt); // Set camera
RLAPI void SetCameraSmoothZoomControl(int keySmoothZoom); // Set camera smooth zoom key to combine with mouse (free camera)
RLAPI void SetCameraMoveControls(int keyFront, int keyBack, int keyRight, int keyLeft, int keyUp, int keyDown); // Set camera move controls (1st person and 3rd person cameras)
//------------------------------------------------------------------------------------
// Basic Shapes Drawing Functions (Module: shapes)
//------------------------------------------------------------------------------------

16
src/rlgl.h
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@ -167,11 +167,11 @@
#endif
// Projection matrix culling
#ifndef RL_CULL_DISTANCE_NEAR
#define RL_CULL_DISTANCE_NEAR 0.01 // Default near cull distance
#ifndef RL_DEFAULT_CULL_DISTANCE_NEAR
#define RL_DEFAULT_CULL_DISTANCE_NEAR 0.01 // Default near cull distance
#endif
#ifndef RL_CULL_DISTANCE_FAR
#define RL_CULL_DISTANCE_FAR 1000.0 // Default far cull distance
#ifndef RL_DEFAULT_CULL_DISTANCE_FAR
#define RL_DEFAULT_CULL_DISTANCE_FAR 1000.0 // Default far cull distance
#endif
// Texture parameters (equivalent to OpenGL defines)
@ -3483,7 +3483,7 @@ TextureCubemap GenTextureCubemap(Shader shader, Texture2D panorama, int size, in
// NOTE: Shader is used to convert HDR equirectangular environment map to cubemap equivalent (6 faces)
// Define projection matrix and send it to shader
Matrix fboProjection = MatrixPerspective(90.0*DEG2RAD, 1.0, RL_CULL_DISTANCE_NEAR, RL_CULL_DISTANCE_FAR);
Matrix fboProjection = MatrixPerspective(90.0*DEG2RAD, 1.0, RL_DEFAULT_CULL_DISTANCE_NEAR, RL_DEFAULT_CULL_DISTANCE_FAR);
SetShaderValueMatrix(shader, shader.locs[LOC_MATRIX_PROJECTION], fboProjection);
// Define view matrix for every side of the cubemap
@ -3568,7 +3568,7 @@ TextureCubemap GenTextureIrradiance(Shader shader, TextureCubemap cubemap, int s
// NOTE: Shader is used to solve diffuse integral by convolution to create an irradiance cubemap
// Define projection matrix and send it to shader
Matrix fboProjection = MatrixPerspective(90.0*DEG2RAD, 1.0, RL_CULL_DISTANCE_NEAR, RL_CULL_DISTANCE_FAR);
Matrix fboProjection = MatrixPerspective(90.0*DEG2RAD, 1.0, RL_DEFAULT_CULL_DISTANCE_NEAR, RL_DEFAULT_CULL_DISTANCE_FAR);
SetShaderValueMatrix(shader, shader.locs[LOC_MATRIX_PROJECTION], fboProjection);
// Define view matrix for every side of the cubemap
@ -3645,7 +3645,7 @@ TextureCubemap GenTexturePrefilter(Shader shader, TextureCubemap cubemap, int si
// NOTE: Shader is used to prefilter HDR and store data into mipmap levels
// Define projection matrix and send it to shader
Matrix fboProjection = MatrixPerspective(90.0*DEG2RAD, 1.0, RL_CULL_DISTANCE_NEAR, RL_CULL_DISTANCE_FAR);
Matrix fboProjection = MatrixPerspective(90.0*DEG2RAD, 1.0, RL_DEFAULT_CULL_DISTANCE_NEAR, RL_DEFAULT_CULL_DISTANCE_FAR);
SetShaderValueMatrix(shader, shader.locs[LOC_MATRIX_PROJECTION], fboProjection);
// Define view matrix for every side of the cubemap
@ -3887,7 +3887,7 @@ void SetVrConfiguration(VrDeviceInfo hmd, Shader distortion)
// Compute camera projection matrices
float projOffset = 4.0f*lensShift; // Scaled to projection space coordinates [-1..1]
Matrix proj = MatrixPerspective(fovy, aspect, RL_CULL_DISTANCE_NEAR, RL_CULL_DISTANCE_FAR);
Matrix proj = MatrixPerspective(fovy, aspect, RL_DEFAULT_CULL_DISTANCE_NEAR, RL_DEFAULT_CULL_DISTANCE_FAR);
RLGL.Vr.config.eyesProjection[0] = MatrixMultiply(proj, MatrixTranslate(projOffset, 0.0f, 0.0f));
RLGL.Vr.config.eyesProjection[1] = MatrixMultiply(proj, MatrixTranslate(-projOffset, 0.0f, 0.0f));