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Simplified code for pixel formats by removing index hint.

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This commit is contained in:
Doug Binks 2018-12-26 19:04:01 +01:00
parent 0da32fc969
commit 485093c42b
1 changed files with 26 additions and 36 deletions
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62
src/wgl_context.c
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@ -31,7 +31,7 @@
#include <malloc.h>
#include <assert.h>
// array of pixel format attributes we need, order in terms of access via getPixelFormatAttribFromArray
// array of pixel format attributes we need
static const int glfwPixelFormatAttribs[] = {
WGL_SUPPORT_OPENGL_ARB,
WGL_DRAW_TO_WINDOW_ARB,
@ -114,23 +114,13 @@ static int getPixelFormatAttribs(_GLFWwindow* window, int pixelFormat, int numAt
return 1;
}
static int getPixelFormatAttribFromArray( int* attribs, int* values, int* hintPos, int attrib )
static int getPixelFormatAttribFromArray( int* attribs, int* values, int attrib )
{
int start = *hintPos;
while ( *hintPos < sizeof(glfwPixelFormatAttribs) / sizeof(glfwPixelFormatAttribs[0]) )
int i;
for (i = 0; i < sizeof(glfwPixelFormatAttribs) / sizeof(glfwPixelFormatAttribs[0]); ++i )
{
if ( attribs[ *hintPos ] == attrib )
return values[ (*hintPos)++ ];
++(*hintPos);
}
// hint did not work, restart search from beginning
*hintPos = 0;
while ( *hintPos < start )
{
if ( attribs[ *hintPos ] == attrib )
return values[ (*hintPos)++ ];
++(*hintPos);
if ( attribs[i] == attrib )
return values[i];
}
// error
@ -201,53 +191,53 @@ static int choosePixelFormat(_GLFWwindow* window,
getPixelFormatAttribs(window, n, numAttribs, pfAttribs, pfValues );
hintPos = 0;
if (!getPixelFormatAttribFromArray(pfAttribs, pfValues, &hintPos, WGL_SUPPORT_OPENGL_ARB) ||
!getPixelFormatAttribFromArray(pfAttribs, pfValues, &hintPos, WGL_DRAW_TO_WINDOW_ARB))
if (!getPixelFormatAttribFromArray(pfAttribs, pfValues, WGL_SUPPORT_OPENGL_ARB) ||
!getPixelFormatAttribFromArray(pfAttribs, pfValues, WGL_DRAW_TO_WINDOW_ARB))
{
continue;
}
if (getPixelFormatAttribFromArray(pfAttribs, pfValues, &hintPos, WGL_PIXEL_TYPE_ARB) !=
if (getPixelFormatAttribFromArray(pfAttribs, pfValues, WGL_PIXEL_TYPE_ARB) !=
WGL_TYPE_RGBA_ARB )
{
continue;
}
if (getPixelFormatAttribFromArray(pfAttribs, pfValues, &hintPos, WGL_ACCELERATION_ARB) ==
if (getPixelFormatAttribFromArray(pfAttribs, pfValues, WGL_ACCELERATION_ARB) ==
WGL_NO_ACCELERATION_ARB )
{
continue;
}
u->redBits = getPixelFormatAttribFromArray(pfAttribs, pfValues, &hintPos, WGL_RED_BITS_ARB);
u->greenBits = getPixelFormatAttribFromArray(pfAttribs, pfValues, &hintPos, WGL_GREEN_BITS_ARB);
u->blueBits = getPixelFormatAttribFromArray(pfAttribs, pfValues, &hintPos, WGL_BLUE_BITS_ARB);
u->alphaBits = getPixelFormatAttribFromArray(pfAttribs, pfValues, &hintPos, WGL_ALPHA_BITS_ARB);
u->redBits = getPixelFormatAttribFromArray(pfAttribs, pfValues, WGL_RED_BITS_ARB);
u->greenBits = getPixelFormatAttribFromArray(pfAttribs, pfValues, WGL_GREEN_BITS_ARB);
u->blueBits = getPixelFormatAttribFromArray(pfAttribs, pfValues, WGL_BLUE_BITS_ARB);
u->alphaBits = getPixelFormatAttribFromArray(pfAttribs, pfValues, WGL_ALPHA_BITS_ARB);
u->depthBits = getPixelFormatAttribFromArray(pfAttribs, pfValues, &hintPos, WGL_DEPTH_BITS_ARB);
u->stencilBits = getPixelFormatAttribFromArray(pfAttribs, pfValues, &hintPos, WGL_STENCIL_BITS_ARB);
u->depthBits = getPixelFormatAttribFromArray(pfAttribs, pfValues, WGL_DEPTH_BITS_ARB);
u->stencilBits = getPixelFormatAttribFromArray(pfAttribs, pfValues, WGL_STENCIL_BITS_ARB);
u->accumRedBits = getPixelFormatAttribFromArray(pfAttribs, pfValues, &hintPos, WGL_ACCUM_RED_BITS_ARB);
u->accumGreenBits = getPixelFormatAttribFromArray(pfAttribs, pfValues, &hintPos, WGL_ACCUM_GREEN_BITS_ARB);
u->accumBlueBits = getPixelFormatAttribFromArray(pfAttribs, pfValues, &hintPos, WGL_ACCUM_BLUE_BITS_ARB);
u->accumAlphaBits = getPixelFormatAttribFromArray(pfAttribs, pfValues, &hintPos, WGL_ACCUM_ALPHA_BITS_ARB);
u->accumRedBits = getPixelFormatAttribFromArray(pfAttribs, pfValues, WGL_ACCUM_RED_BITS_ARB);
u->accumGreenBits = getPixelFormatAttribFromArray(pfAttribs, pfValues, WGL_ACCUM_GREEN_BITS_ARB);
u->accumBlueBits = getPixelFormatAttribFromArray(pfAttribs, pfValues, WGL_ACCUM_BLUE_BITS_ARB);
u->accumAlphaBits = getPixelFormatAttribFromArray(pfAttribs, pfValues, WGL_ACCUM_ALPHA_BITS_ARB);
u->auxBuffers = getPixelFormatAttribFromArray(pfAttribs, pfValues, &hintPos, WGL_AUX_BUFFERS_ARB);
u->auxBuffers = getPixelFormatAttribFromArray(pfAttribs, pfValues, WGL_AUX_BUFFERS_ARB);
if (getPixelFormatAttribFromArray(pfAttribs, pfValues, &hintPos, WGL_STEREO_ARB))
if (getPixelFormatAttribFromArray(pfAttribs, pfValues, WGL_STEREO_ARB))
u->stereo = GLFW_TRUE;
if (getPixelFormatAttribFromArray(pfAttribs, pfValues, &hintPos, WGL_DOUBLE_BUFFER_ARB))
if (getPixelFormatAttribFromArray(pfAttribs, pfValues, WGL_DOUBLE_BUFFER_ARB))
u->doublebuffer = GLFW_TRUE;
if (_glfw.wgl.ARB_multisample)
u->samples = getPixelFormatAttribFromArray(pfAttribs, pfValues, &hintPos, WGL_SAMPLES_ARB);
u->samples = getPixelFormatAttribFromArray(pfAttribs, pfValues, WGL_SAMPLES_ARB);
if (ctxconfig->client == GLFW_OPENGL_API)
{
if (_glfw.wgl.ARB_framebuffer_sRGB ||
_glfw.wgl.EXT_framebuffer_sRGB)
{
if (getPixelFormatAttribFromArray(pfAttribs, pfValues, &hintPos, WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB))
if (getPixelFormatAttribFromArray(pfAttribs, pfValues, WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB))
u->sRGB = GLFW_TRUE;
}
}
@ -255,7 +245,7 @@ static int choosePixelFormat(_GLFWwindow* window,
{
if (_glfw.wgl.EXT_colorspace)
{
if (getPixelFormatAttribFromArray(pfAttribs, pfValues, &hintPos, WGL_COLORSPACE_EXT) ==
if (getPixelFormatAttribFromArray(pfAttribs, pfValues, WGL_COLORSPACE_EXT) ==
WGL_COLORSPACE_SRGB_EXT)
{
u->sRGB = GLFW_TRUE;