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Added function: rlCheckBufferLimit()

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raysan5
2018-05-20 01:55:46 +02:00
parent 3b70b66a08
commit ca69068814
3 changed files with 50 additions and 21 deletions
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54
src/rlgl.c
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@ -85,18 +85,18 @@
#define WINGDIAPI __declspec(dllimport)
#endif
#include <GL/gl.h> // OpenGL 1.1 library
#include <GL/gl.h> // OpenGL 1.1 library
#endif
#endif
#if defined(GRAPHICS_API_OPENGL_21)
#define GRAPHICS_API_OPENGL_33
#define GRAPHICS_API_OPENGL_33 // OpenGL 2.1 uses mostly OpenGL 3.3 Core functionality
#endif
#if defined(GRAPHICS_API_OPENGL_33)
#if defined(__APPLE__)
#include <OpenGL/gl3.h> // OpenGL 3 library for OSX
#include <OpenGL/gl3ext.h>
#include <OpenGL/gl3.h> // OpenGL 3 library for OSX
#include <OpenGL/gl3ext.h> // OpenGL 3 extensions library for OSX
#else
#define GLAD_IMPLEMENTATION
#if defined(RLGL_STANDALONE)
@ -108,17 +108,17 @@
#endif
#if defined(GRAPHICS_API_OPENGL_ES2)
#include <EGL/egl.h> // EGL library
#include <GLES2/gl2.h> // OpenGL ES 2.0 library
#include <GLES2/gl2ext.h> // OpenGL ES 2.0 extensions library
#include <EGL/egl.h> // EGL library
#include <GLES2/gl2.h> // OpenGL ES 2.0 library
#include <GLES2/gl2ext.h> // OpenGL ES 2.0 extensions library
#endif
#if defined(RLGL_STANDALONE)
#include <stdarg.h> // Required for: va_list, va_start(), vfprintf(), va_end() [Used only on TraceLog()]
#include <stdarg.h> // Required for: va_list, va_start(), vfprintf(), va_end() [Used only on TraceLog()]
#endif
#if !defined(GRAPHICS_API_OPENGL_11) && defined(SUPPORT_DISTORTION_SHADER)
#include "shader_distortion.h" // Distortion shader to be embedded
#include "shader_distortion.h" // Distortion shader to be embedded
#endif
@ -307,17 +307,17 @@ static bool vrStereoRender = false; // VR stereo rendering enabled/disabled
// Extension supported flag: Anisotropic filtering
static bool texAnisotropicFilterSupported = false; // Anisotropic texture filtering support
static float maxAnisotropicLevel = 0.0f; // Maximum anisotropy level supported (minimum is 2.0f)
static float maxAnisotropicLevel = 0.0f; // Maximum anisotropy level supported (minimum is 2.0f)
// Extension supported flag: Clamp mirror wrap mode
static bool texClampMirrorSupported = false; // Clamp mirror wrap mode supported
static bool texClampMirrorSupported = false; // Clamp mirror wrap mode supported
#if defined(GRAPHICS_API_OPENGL_ES2)
// NOTE: VAO functionality is exposed through extensions (OES)
static PFNGLGENVERTEXARRAYSOESPROC glGenVertexArrays;
static PFNGLBINDVERTEXARRAYOESPROC glBindVertexArray;
static PFNGLDELETEVERTEXARRAYSOESPROC glDeleteVertexArrays;
//static PFNGLISVERTEXARRAYOESPROC glIsVertexArray; // NOTE: Fails in WebGL, omitted
//static PFNGLISVERTEXARRAYOESPROC glIsVertexArray; // NOTE: Fails in WebGL, omitted
#endif
static bool debugMarkerSupported = false;
@ -658,13 +658,11 @@ void rlEnd(void)
// Correct increment formula would be: depthInc = (zfar - znear)/pow(2, bits)
currentDepth += (1.0f/20000.0f);
// TODO: Verify internal buffers limits
// NOTE: Before launching draw, verify no matrix are left in the stack!
// NOTE: Probably a lines/triangles margin should be left, rlEnd could be called
// after an undetermined number of triangles buffered (check shapes::DrawPoly())
// Verify internal buffers limits
// NOTE: This check is combined with usage of rlCheckBufferLimit()
if ((lines.vCounter/2 >= MAX_LINES_BATCH - 2) ||
(triangles.vCounter/3 >= MAX_TRIANGLES_BATCH - 16) ||
(quads.vCounter/4 >= MAX_QUADS_BATCH - 2)) rlglDraw();
(triangles.vCounter/3 >= MAX_TRIANGLES_BATCH - 3) ||
(quads.vCounter/4 >= MAX_QUADS_BATCH - 4)) rlglDraw();
}
// Define one vertex (position)
@ -1313,6 +1311,22 @@ int rlGetVersion(void)
#endif
}
// Check internal buffer overflow for a given number of vertex
bool rlCheckBufferLimit(int type, int vCount)
{
bool overflow = false;
#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
switch (type)
{
case RL_LINES: overflow = ((lines.vCounter + vCount)/2 >= MAX_LINES_BATCH); break;
case RL_TRIANGLES: overflow = ((triangles.vCounter + vCount)/3 >= MAX_TRIANGLES_BATCH); break;
case RL_QUADS: overflow = ((quads.vCounter + vCount)/4 >= MAX_QUADS_BATCH); break;
default: break;
}
#endif
return overflow;
}
// Set debug marker
void rlSetDebugMarker(const char *text)
{
@ -1325,7 +1339,7 @@ void rlSetDebugMarker(const char *text)
// NOTE: External loader function could be passed as a pointer
void rlLoadExtensions(void *loader)
{
#if defined(GRAPHICS_API_OPENGL_21) || defined(GRAPHICS_API_OPENGL_33)
#if defined(GRAPHICS_API_OPENGL_33)
// NOTE: glad is generated and contains only required OpenGL 3.3 Core extensions (and lower versions)
#if !defined(__APPLE__)
if (!gladLoadGLLoader((GLADloadproc)loader)) TraceLog(LOG_WARNING, "GLAD: Cannot load OpenGL extensions");
@ -1448,7 +1462,7 @@ unsigned int rlLoadTexture(void *data, int width, int height, int format, int mi
else glCompressedTexImage2D(GL_TEXTURE_2D, i, glInternalFormat, mipWidth, mipHeight, 0, mipSize, (unsigned char *)data + mipOffset);
#endif
#if defined(GRAPHICS_API_OPENGL_21) || defined(GRAPHICS_API_OPENGL_33)
#if defined(GRAPHICS_API_OPENGL_33)
if (format == UNCOMPRESSED_GRAYSCALE)
{
GLint swizzleMask[] = { GL_RED, GL_RED, GL_RED, GL_ONE };