GL: Wrap extension support inside GLContext

This makes it possible to disable all the extensions when forcing
workarounds.

Also it will allow future options to selectively disable each extension
to know which one is buggy.

1 files changed, 11 insertions, 12 deletions

diff --git a/source/blender/gpu/opengl/gl_texture.cc b/source/blender/gpu/opengl/gl_texture.cc
index 4e279fc47c1..ef4b2d1d4d3 100644
--- a/source/blender/gpu/opengl/gl_texture.cc
+++ b/source/blender/gpu/opengl/gl_texture.cc
@@ -89,7 +89,7 @@ bool GLTexture::init_internal(void)
   this->ensure_mipmaps(0);
 
   /* Avoid issue with incomplete textures. */
-  if (GLEW_ARB_direct_state_access) {
+  if (GLContext::direct_state_access_support) {
     glTextureParameteri(tex_id_, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
   }
   else {
@@ -111,7 +111,7 @@ bool GLTexture::init_internal(GPUVertBuf *vbo)
 
   GLenum internal_format = to_gl_internal_format(format_);
 
-  if (GLEW_ARB_direct_state_access) {
+  if (GLContext::direct_state_access_support) {
     glTextureBuffer(tex_id_, internal_format, gl_vbo->vbo_id_);
   }
   else {
@@ -244,8 +244,8 @@ void GLTexture::update_sub(
   GLenum gl_format = to_gl_data_format(format_);
   GLenum gl_type = to_gl(type);
 
-  /* Some drivers have issues with cubemap & glTextureSubImage3D even if it correct. */
-  if (GLEW_ARB_direct_state_access && (type_ != GPU_TEXTURE_CUBE)) {
+  /* Some drivers have issues with cubemap & glTextureSubImage3D even if it is correct. */
+  if (GLContext::direct_state_access_support && (type_ != GPU_TEXTURE_CUBE)) {
     this->update_sub_direct_state_access(mip, offset, extent, gl_format, gl_type, data);
     return;
   }
@@ -306,7 +306,7 @@ void GLTexture::generate_mipmap(void)
   }
 
   /* Downsample from mip 0 using implementation. */
-  if (GLEW_ARB_direct_state_access) {
+  if (GLContext::direct_state_access_support) {
     glGenerateTextureMipmap(tex_id_);
   }
   else {
@@ -319,7 +319,7 @@ void GLTexture::clear(eGPUDataFormat data_format, const void *data)
 {
   BLI_assert(validate_data_format(format_, data_format));
 
-  if (GLEW_ARB_clear_texture && !(G.debug & G_DEBUG_GPU_FORCE_WORKAROUNDS)) {
+  if (GLContext::clear_texture_support) {
     int mip = 0;
     GLenum gl_format = to_gl_data_format(format_);
     GLenum gl_type = to_gl(data_format);
@@ -348,8 +348,7 @@ void GLTexture::copy_to(Texture *dst_)
   /* TODO support array / 3D textures. */
   BLI_assert(dst->d_ == 0);
 
-  if (GLEW_ARB_copy_image && !GLContext::texture_copy_workaround) {
-    /* Opengl 4.3 */
+  if (GLContext::copy_image_support) {
     int mip = 0;
     /* NOTE: mip_size_get() won't override any dimension that is equal to 0. */
     int extent[3] = {1, 1, 1};
@@ -385,7 +384,7 @@ void *GLTexture::read(int mip, eGPUDataFormat type)
   GLenum gl_format = to_gl_data_format(format_);
   GLenum gl_type = to_gl(type);
 
-  if (GLEW_ARB_direct_state_access) {
+  if (GLContext::direct_state_access_support) {
     glGetTextureImage(tex_id_, mip, gl_format, gl_type, texture_size, data);
   }
   else {
@@ -416,7 +415,7 @@ void GLTexture::swizzle_set(const char swizzle[4])
                          (GLint)swizzle_to_gl(swizzle[1]),
                          (GLint)swizzle_to_gl(swizzle[2]),
                          (GLint)swizzle_to_gl(swizzle[3])};
-  if (GLEW_ARB_direct_state_access) {
+  if (GLContext::direct_state_access_support) {
     glTextureParameteriv(tex_id_, GL_TEXTURE_SWIZZLE_RGBA, gl_swizzle);
   }
   else {
@@ -430,7 +429,7 @@ void GLTexture::mip_range_set(int min, int max)
   BLI_assert(min <= max && min >= 0 && max <= mipmaps_);
   mip_min_ = min;
   mip_max_ = max;
-  if (GLEW_ARB_direct_state_access) {
+  if (GLContext::direct_state_access_support) {
     glTextureParameteri(tex_id_, GL_TEXTURE_BASE_LEVEL, min);
     glTextureParameteri(tex_id_, GL_TEXTURE_MAX_LEVEL, max);
   }
@@ -520,7 +519,7 @@ void GLTexture::samplers_init(void)
 
 void GLTexture::samplers_update(void)
 {
-  if (!GLEW_EXT_texture_filter_anisotropic) {
+  if (!GLContext::texture_filter_anisotropic_support) {
     return;
   }