Fixed compiler warning and use higher precision in angle calculation
diff --git a/src/render/opengles2/SDL_render_gles2.c b/src/render/opengles2/SDL_render_gles2.c
index 2a2e844..fe51b9a 100644
--- a/src/render/opengles2/SDL_render_gles2.c
+++ b/src/render/opengles2/SDL_render_gles2.c
@@ -1857,8 +1857,6 @@ GLES2_RenderCopy(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect *s
return GL_CheckError("", renderer);
}
-#define PI 3.14159265f
-
static int
GLES2_RenderCopyEx(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect *srcrect,
const SDL_FRect *dstrect, const double angle, const SDL_FPoint *center, const SDL_RendererFlip flip)
@@ -1880,7 +1878,7 @@ GLES2_RenderCopyEx(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect
data->glEnableVertexAttribArray(GLES2_ATTRIBUTE_CENTER);
data->glEnableVertexAttribArray(GLES2_ATTRIBUTE_ANGLE);
- radian_angle = PI * (360.0f - angle) / 180.f;
+ radian_angle = (float)(M_PI * (360.0 - angle) / 180.0);
fAngle[0] = fAngle[2] = fAngle[4] = fAngle[6] = (GLfloat)SDL_sin(radian_angle);
/* render expects cos value - 1 (see GLES2_VertexSrc_Default_) */
fAngle[1] = fAngle[3] = fAngle[5] = fAngle[7] = (GLfloat)SDL_cos(radian_angle) - 1.0f;