From 35371d65607780a2fc63a65cba2d34562538ff96 Mon Sep 17 00:00:00 2001
From: Laura Ekstrand <laura@jlekstrand.net>
Date: Thu, 4 Dec 2014 14:10:23 -0800
Subject: main: Moved _mesa_get_current_tex_object from teximage.c to texobj.c.

Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
---
 src/mesa/main/texobj.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)

(limited to 'src/mesa/main/texobj.c')

diff --git a/src/mesa/main/texobj.c b/src/mesa/main/texobj.c
index c309eb8d2be..a17aaa662e8 100644
--- a/src/mesa/main/texobj.c
+++ b/src/mesa/main/texobj.c
@@ -98,6 +98,87 @@ _mesa_lookup_texture_locked(struct gl_context *ctx, GLuint id)
       _mesa_HashLookupLocked(ctx->Shared->TexObjects, id);
 }
 
+/**
+ * Return a pointer to the current texture object for the given target
+ * on the current texture unit.
+ * Note: all <target> error checking should have been done by this point.
+ */
+struct gl_texture_object *
+_mesa_get_current_tex_object(struct gl_context *ctx, GLenum target)
+{
+   struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
+   const GLboolean arrayTex = ctx->Extensions.EXT_texture_array;
+
+   switch (target) {
+      case GL_TEXTURE_1D:
+         return texUnit->CurrentTex[TEXTURE_1D_INDEX];
+      case GL_PROXY_TEXTURE_1D:
+         return ctx->Texture.ProxyTex[TEXTURE_1D_INDEX];
+      case GL_TEXTURE_2D:
+         return texUnit->CurrentTex[TEXTURE_2D_INDEX];
+      case GL_PROXY_TEXTURE_2D:
+         return ctx->Texture.ProxyTex[TEXTURE_2D_INDEX];
+      case GL_TEXTURE_3D:
+         return texUnit->CurrentTex[TEXTURE_3D_INDEX];
+      case GL_PROXY_TEXTURE_3D:
+         return ctx->Texture.ProxyTex[TEXTURE_3D_INDEX];
+      case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
+      case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
+      case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
+      case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
+      case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
+      case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
+      case GL_TEXTURE_CUBE_MAP_ARB:
+         return ctx->Extensions.ARB_texture_cube_map
+                ? texUnit->CurrentTex[TEXTURE_CUBE_INDEX] : NULL;
+      case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
+         return ctx->Extensions.ARB_texture_cube_map
+                ? ctx->Texture.ProxyTex[TEXTURE_CUBE_INDEX] : NULL;
+      case GL_TEXTURE_CUBE_MAP_ARRAY:
+         return ctx->Extensions.ARB_texture_cube_map_array
+                ? texUnit->CurrentTex[TEXTURE_CUBE_ARRAY_INDEX] : NULL;
+      case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
+         return ctx->Extensions.ARB_texture_cube_map_array
+                ? ctx->Texture.ProxyTex[TEXTURE_CUBE_ARRAY_INDEX] : NULL;
+      case GL_TEXTURE_RECTANGLE_NV:
+         return ctx->Extensions.NV_texture_rectangle
+                ? texUnit->CurrentTex[TEXTURE_RECT_INDEX] : NULL;
+      case GL_PROXY_TEXTURE_RECTANGLE_NV:
+         return ctx->Extensions.NV_texture_rectangle
+                ? ctx->Texture.ProxyTex[TEXTURE_RECT_INDEX] : NULL;
+      case GL_TEXTURE_1D_ARRAY_EXT:
+         return arrayTex ? texUnit->CurrentTex[TEXTURE_1D_ARRAY_INDEX] : NULL;
+      case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
+         return arrayTex ? ctx->Texture.ProxyTex[TEXTURE_1D_ARRAY_INDEX] : NULL;
+      case GL_TEXTURE_2D_ARRAY_EXT:
+         return arrayTex ? texUnit->CurrentTex[TEXTURE_2D_ARRAY_INDEX] : NULL;
+      case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
+         return arrayTex ? ctx->Texture.ProxyTex[TEXTURE_2D_ARRAY_INDEX] : NULL;
+      case GL_TEXTURE_BUFFER:
+         return ctx->API == API_OPENGL_CORE &&
+                ctx->Extensions.ARB_texture_buffer_object ?
+                texUnit->CurrentTex[TEXTURE_BUFFER_INDEX] : NULL;
+      case GL_TEXTURE_EXTERNAL_OES:
+         return _mesa_is_gles(ctx) && ctx->Extensions.OES_EGL_image_external
+            ? texUnit->CurrentTex[TEXTURE_EXTERNAL_INDEX] : NULL;
+      case GL_TEXTURE_2D_MULTISAMPLE:
+         return ctx->Extensions.ARB_texture_multisample
+            ? texUnit->CurrentTex[TEXTURE_2D_MULTISAMPLE_INDEX] : NULL;
+      case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
+         return ctx->Extensions.ARB_texture_multisample
+            ? ctx->Texture.ProxyTex[TEXTURE_2D_MULTISAMPLE_INDEX] : NULL;
+      case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
+         return ctx->Extensions.ARB_texture_multisample
+            ? texUnit->CurrentTex[TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX] : NULL;
+      case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
+         return ctx->Extensions.ARB_texture_multisample
+            ? ctx->Texture.ProxyTex[TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX] : NULL;
+      default:
+         _mesa_problem(NULL, "bad target in _mesa_get_current_tex_object()");
+         return NULL;
+   }
+}
+
 
 /**
  * Allocate and initialize a new texture object.  But don't put it into the
-- 
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