H. Verbeet : wined3d: Add support for native NPOT textures.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 193f6bbd92ddb8e97c9c7874507905a0b9b5b523
URL:    http://source.winehq.org/git/?p=wine.git;a=commit;h=193f6bbd92ddb8e97c9c7874507905a0b9b5b523

Author: H. Verbeet <hverbeet at gmail.com>
Date:   Tue Sep 26 20:31:48 2006 +0200

wined3d: Add support for native NPOT textures.

---

 dlls/wined3d/device.c          |   31 ++++++++++++++++++++-----------
 dlls/wined3d/directx.c         |    9 +++++++++
 dlls/wined3d/wined3d_main.c    |    2 +-
 dlls/wined3d/wined3d_private.h |    1 +
 include/wine/wined3d_gl.h      |    1 +
 5 files changed, 32 insertions(+), 12 deletions(-)

diff --git a/dlls/wined3d/device.c b/dlls/wined3d/device.c
index c7ed30e..736399f 100644
--- a/dlls/wined3d/device.c
+++ b/dlls/wined3d/device.c
@@ -971,11 +971,15 @@ static HRESULT  WINAPI IWineD3DDeviceImp
       *******************************/
 
     /* Non-power2 support */
-
-    /* Find the nearest pow2 match */
-    pow2Width = pow2Height = 1;
-    while (pow2Width < Width) pow2Width <<= 1;
-    while (pow2Height < Height) pow2Height <<= 1;
+    if (wined3d_settings.nonpower2_mode == NP2_NATIVE) {
+        pow2Width = Width;
+        pow2Height = Height;
+    } else {
+        /* Find the nearest pow2 match */
+        pow2Width = pow2Height = 1;
+        while (pow2Width < Width) pow2Width <<= 1;
+        while (pow2Height < Height) pow2Height <<= 1;
+    }
 
     if (pow2Width > Width || pow2Height > Height) {
          /** TODO: add support for non power two compressed textures (OpenGL 2 provices support for * non-power-two textures gratis) **/
@@ -1125,8 +1129,8 @@ static HRESULT  WINAPI IWineD3DDeviceImp
     UINT tmpW;
     UINT tmpH;
     HRESULT hr;
-    unsigned int pow2Width  = Width;
-    unsigned int pow2Height = Height;
+    unsigned int pow2Width;
+    unsigned int pow2Height;
 
 
     TRACE("(%p) : Width %d, Height %d, Levels %d, Usage %#lx\n", This, Width, Height, Levels, Usage);
@@ -1146,10 +1150,15 @@ static HRESULT  WINAPI IWineD3DDeviceImp
     object->height = Height;
 
     /** Non-power2 support **/
-    /* Find the nearest pow2 match */
-    pow2Width = pow2Height = 1;
-    while (pow2Width < Width) pow2Width <<= 1;
-    while (pow2Height < Height) pow2Height <<= 1;
+    if (wined3d_settings.nonpower2_mode == NP2_NATIVE) {
+        pow2Width = Width;
+        pow2Height = Height;
+    } else {
+        /* Find the nearest pow2 match */
+        pow2Width = pow2Height = 1;
+        while (pow2Width < Width) pow2Width <<= 1;
+        while (pow2Height < Height) pow2Height <<= 1;
+    }
 
     /** FIXME: add support for real non-power-two if it's provided by the video card **/
     /* Precalculated scaling for 'faked' non power of two texture coords */
diff --git a/dlls/wined3d/directx.c b/dlls/wined3d/directx.c
index 3a2bc7e..68914d6 100644
--- a/dlls/wined3d/directx.c
+++ b/dlls/wined3d/directx.c
@@ -590,6 +590,9 @@ #undef USE_GL_FUNC
             } else if (strcmp(ThisExtn, "GL_ARB_texture_mirrored_repeat") == 0) {
                 TRACE_(d3d_caps)(" FOUND: ARB Texture mirrored repeat support\n");
                 gl_info->supported[ARB_TEXTURE_MIRRORED_REPEAT] = TRUE;
+            } else if (strcmp(ThisExtn, "GL_ARB_texture_non_power_of_two") == 0) {
+                TRACE_(d3d_caps)(" FOUND: ARB NPOT texture support\n");
+                gl_info->supported[ARB_TEXTURE_NON_POWER_OF_TWO] = TRUE;
             } else if (strcmp(ThisExtn, "GLX_ARB_multisample") == 0) {
                 TRACE_(d3d_caps)(" FOUND: ARB multisample support\n");
                 gl_info->supported[ARB_MULTISAMPLE] = TRUE;
@@ -765,6 +768,12 @@ #undef USE_GL_FUNC
 
     gl_info->max_sampler_stages = max(gl_info->max_samplers, gl_info->max_texture_stages);
 
+    /* We can only use NP2_NATIVE when the hardware supports it. */
+    if (wined3d_settings.nonpower2_mode == NP2_NATIVE && !gl_info->supported[ARB_TEXTURE_NON_POWER_OF_TWO]) {
+        WARN_(d3d_caps)("GL_ARB_texture_non_power_of_two not supported, falling back to NP2_NONE NPOT mode.\n");
+        wined3d_settings.nonpower2_mode = NP2_NONE;
+    }
+
     /* Below is a list of Nvidia and ATI GPUs. Both vendors have dozens of different GPUs with roughly the same
      * features. In most cases GPUs from a certain family differ in clockspeeds, the amount of video memory and
      * in case of the latest videocards in the number of pixel/vertex pipelines.
diff --git a/dlls/wined3d/wined3d_main.c b/dlls/wined3d/wined3d_main.c
index af4e5f3..ab6fb3d 100644
--- a/dlls/wined3d/wined3d_main.c
+++ b/dlls/wined3d/wined3d_main.c
@@ -42,7 +42,7 @@ wined3d_settings_t wined3d_settings = 
     FALSE,          /* Use of GLSL disabled by default */
     SHADER_ARB,     /* Use ARB vertex programs, when available */
     SHADER_ARB,     /* Use ARB fragment programs, when available */
-    NP2_NONE,       /* Box NPOT textures */
+    NP2_NATIVE,     /* Use native NPOT textures, when available */
     RTL_AUTO,       /* Automatically determine best locking method */
     64*1024*1024    /* 64MB texture memory by default */
 };
diff --git a/dlls/wined3d/wined3d_private.h b/dlls/wined3d/wined3d_private.h
index da607de..ff84c5b 100644
--- a/dlls/wined3d/wined3d_private.h
+++ b/dlls/wined3d/wined3d_private.h
@@ -132,6 +132,7 @@ #define VBO_HW     1
 
 #define NP2_NONE   0
 #define NP2_REPACK 1
+#define NP2_NATIVE 2
 
 #define SHADER_SW   0
 #define SHADER_ARB  1
diff --git a/include/wine/wined3d_gl.h b/include/wine/wined3d_gl.h
index 1832287..1cc6409 100644
--- a/include/wine/wined3d_gl.h
+++ b/include/wine/wined3d_gl.h
@@ -1424,6 +1424,7 @@ typedef enum _GL_SupportedExt {
   ARB_HALF_FLOAT_PIXEL,
   ARB_TEXTURE_BORDER_CLAMP,
   ARB_TEXTURE_MIRRORED_REPEAT,
+  ARB_TEXTURE_NON_POWER_OF_TWO,
   ARB_VERTEX_PROGRAM,
   ARB_VERTEX_BLEND,
   ARB_VERTEX_BUFFER_OBJECT,