From 0085b24fd5b080c57a176ffe1bbae7fa5b272fd9 Mon Sep 17 00:00:00 2001
From: twinaphex <libretro@gmail.com>
Date: Wed, 8 Nov 2017 00:49:01 +0100
Subject: [PATCH] Cut down on gl_check_capability calls

---
 gfx/common/gl_common.h                    | 1 +
 gfx/drivers/gl.c                          | 8 +++++---
 gfx/drivers_renderchain/gl2_renderchain.c | 4 ++--
 3 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/gfx/common/gl_common.h b/gfx/common/gl_common.h
index 19c3712bd1..8cac2884a2 100644
--- a/gfx/common/gl_common.h
+++ b/gfx/common/gl_common.h
@@ -63,6 +63,7 @@ typedef struct gl
    bool support_unpack_row_length;
    bool have_es2_compat;
    bool have_full_npot_support;
+   bool have_mipmap;
 
    bool egl_images;
 #ifdef HAVE_OVERLAY
diff --git a/gfx/drivers/gl.c b/gfx/drivers/gl.c
index dc76d522de..1e604f5c93 100644
--- a/gfx/drivers/gl.c
+++ b/gfx/drivers/gl.c
@@ -827,12 +827,13 @@ void gl_load_texture_data(
    bool rgb32       = (base_size == (sizeof(uint32_t)));
    GLenum wrap      = gl_wrap_type_to_enum(wrap_type);
    GLuint id        = (GLuint)id_data;
+   bool have_mipmap = gl_check_capability(GL_CAPS_MIPMAP);
 
    glBindTexture(GL_TEXTURE_2D, id);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrap);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrap);
 
-   if (!gl_check_capability(GL_CAPS_MIPMAP))
+   if (!have_mipmap)
    {
       /* Assume no mipmapping support. */
       switch (filter_type)
@@ -882,7 +883,7 @@ void gl_load_texture_data(
          (use_rgba || !rgb32) ? GL_RGBA : RARCH_GL_TEXTURE_TYPE32,
          (rgb32) ? RARCH_GL_FORMAT32 : GL_UNSIGNED_SHORT_4_4_4_4, frame);
 
-   if (want_mipmap && gl_check_capability(GL_CAPS_MIPMAP))
+   if (want_mipmap && have_mipmap)
       glGenerateMipmap(GL_TEXTURE_2D);
 }
 
@@ -1249,7 +1250,7 @@ static bool gl_frame(void *data, const void *frame,
 
       /* No point regenerating mipmaps
        * if there are no new frames. */
-      if (gl->tex_mipmap && gl_check_capability(GL_CAPS_MIPMAP))
+      if (gl->tex_mipmap && gl->have_mipmap)
          glGenerateMipmap(GL_TEXTURE_2D);
    }
 
@@ -1591,6 +1592,7 @@ static bool resolve_extensions(gl_t *gl, const char *context_ident)
     */
    gl->have_full_npot_support = gl_check_capability(GL_CAPS_FULL_NPOT_SUPPORT);
 #endif
+   gl->have_mipmap            = gl_check_capability(GL_CAPS_MIPMAP);
    gl->have_es2_compat        = gl_check_capability(GL_CAPS_ES2_COMPAT);
    gl->have_sync              = gl_check_capability(GL_CAPS_SYNC);
 
diff --git a/gfx/drivers_renderchain/gl2_renderchain.c b/gfx/drivers_renderchain/gl2_renderchain.c
index e1ad84918b..dcaa6c0e2f 100644
--- a/gfx/drivers_renderchain/gl2_renderchain.c
+++ b/gfx/drivers_renderchain/gl2_renderchain.c
@@ -294,7 +294,7 @@ static void gl2_renderchain_render(
       mip_level = i + 1;
 
       if (video_shader_driver_mipmap_input(&mip_level)
-            && gl_check_capability(GL_CAPS_MIPMAP))
+            && gl->have_mipmap)
          glGenerateMipmap(GL_TEXTURE_2D);
 
       glClear(GL_COLOR_BUFFER_BIT);
@@ -371,7 +371,7 @@ static void gl2_renderchain_render(
    mip_level = gl->fbo_pass + 1;
 
    if (video_shader_driver_mipmap_input(&mip_level)
-         && gl_check_capability(GL_CAPS_MIPMAP))
+         && gl->have_mipmap)
       glGenerateMipmap(GL_TEXTURE_2D);
 
    glClear(GL_COLOR_BUFFER_BIT);