C++ (Cpp) clear_ci_buffer_with_masking примеры использования

Пример #1

Файл: s_clear.c Проект: MttDs/new-rexeno-tindpe

/**
 * Clear the front/back/left/right/aux color buffers.
 * This function is usually only called if the device driver can't
 * clear its own color buffers for some reason (such as with masking).
 */
static void
clear_color_buffers(GLcontext *ctx)
{
   GLboolean masking;
   GLuint buf;

   if (ctx->Visual.rgbMode) {
      if (ctx->Color.ColorMask[0] && 
          ctx->Color.ColorMask[1] && 
          ctx->Color.ColorMask[2] && 
          ctx->Color.ColorMask[3]) {
         masking = GL_FALSE;
      }
      else {
         masking = GL_TRUE;
      }
   }
   else {
      struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];
      const GLuint indexMask = (1 << _mesa_get_format_bits(rb->Format, GL_INDEX_BITS)) - 1;
      if ((ctx->Color.IndexMask & indexMask) == indexMask) {
         masking = GL_FALSE;
      }
      else {
         masking = GL_TRUE;
      }
   }

   for (buf = 0; buf < ctx->DrawBuffer->_NumColorDrawBuffers; buf++) {
      struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[buf];
      if (ctx->Visual.rgbMode) {
         if (masking) {
            clear_rgba_buffer_with_masking(ctx, rb);
         }
         else {
            clear_rgba_buffer(ctx, rb);
         }
      }
      else {
         if (masking) {
            clear_ci_buffer_with_masking(ctx, rb);
         }
         else {
            clear_ci_buffer(ctx, rb);
         }
      }
   }
}

Пример #2

Файл: s_buffers.c Проект: Starlink/mesa

/**
 * Clear the front/back/left/right/aux color buffers.
 * This function is usually only called if the device driver can't
 * clear its own color buffers for some reason (such as with masking).
 */
static void
clear_color_buffers(GLcontext *ctx)
{
   GLboolean masking;
   GLuint i;

   if (ctx->Visual.rgbMode) {
      if (ctx->Color.ColorMask[0] && 
          ctx->Color.ColorMask[1] && 
          ctx->Color.ColorMask[2] && 
          ctx->Color.ColorMask[3]) {
         masking = GL_FALSE;
      }
      else {
         masking = GL_TRUE;
      }
   }
   else {
      struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0][0];
      const GLuint indexBits = (1 << rb->IndexBits) - 1;
      if ((ctx->Color.IndexMask & indexBits) == indexBits) {
         masking = GL_FALSE;
      }
      else {
         masking = GL_TRUE;
      }
   }

   for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers[0]; i++) {
      struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0][i];
      if (ctx->Visual.rgbMode) {
         if (masking) {
            clear_rgba_buffer_with_masking(ctx, rb);
         }
         else {
            clear_rgba_buffer(ctx, rb);
         }
      }
      else {
         if (masking) {
            clear_ci_buffer_with_masking(ctx, rb);
         }
         else {
            clear_ci_buffer(ctx, rb);
         }
      }
   }
}