Lines Matching refs:gamma
404 const char *expectedError1 = "Parameter 'gamma' is invalid";
407 float gamma;
419 /* Make call with different gamma values */
422 /* gamma = 0 all black */
424 gamma = 0.0f;
426 /* gamma = 1 identity */
428 gamma = 1.0f;
430 /* gamma = [0.2,0.8] normal range */
432 gamma = 0.2f + 0.8f * SDLTest_RandomUnitFloat();
434 /* gamma = >1.1 non-standard range */
436 gamma = 1.1f + SDLTest_RandomUnitFloat();
442 SDL_CalculateGammaRamp(gamma, ramp);
443 SDLTest_AssertPass("Call to SDL_CalculateGammaRamp(%f)", gamma);
467 gamma = -1;
469 SDL_CalculateGammaRamp(gamma, ramp);
470 SDLTest_AssertPass("Call to SDL_CalculateGammaRamp(%f)", gamma);
