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Added a utility function to calculate the next power of 2 for a value

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This commit is contained in:
Sam Lantinga
2022-07-17 08:31:16 -07:00
parent 90b86b132a
commit b299cb3d3c
13 changed files with 105 additions and 40 deletions
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16
src/render/opengl/SDL_render_gl.c
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@@ -25,6 +25,7 @@
#include "SDL_opengl.h"
#include "../SDL_sysrender.h"
#include "SDL_shaders_gl.h"
#include "../../SDL_utils_c.h"
#ifdef __MACOSX__
#include <OpenGL/OpenGL.h>
@@ -411,17 +412,6 @@ GL_SupportsBlendMode(SDL_Renderer * renderer, SDL_BlendMode blendMode)
return SDL_TRUE;
}
SDL_FORCE_INLINE int
power_of_2(int input)
{
int value = 1;
while (value < input) {
value <<= 1;
}
return value;
}
SDL_FORCE_INLINE SDL_bool
convert_format(GL_RenderData *renderdata, Uint32 pixel_format,
GLint* internalFormat, GLenum* format, GLenum* type)
@@ -540,8 +530,8 @@ GL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
data->texw = (GLfloat) texture_w;
data->texh = (GLfloat) texture_h;
} else {
texture_w = power_of_2(texture->w);
texture_h = power_of_2(texture->h);
texture_w = SDL_powerof2(texture->w);
texture_h = SDL_powerof2(texture->h);
data->texw = (GLfloat) (texture->w) / texture_w;
data->texh = (GLfloat) texture->h / texture_h;
}