mesa: refactor: move glReadPixels code into new readpix.c file

[mesa.git] / src / mesa / main / texrender.c

diff --git a/src/mesa/main/texrender.c b/src/mesa/main/texrender.c
index 32e7b575f001e73b918628843a4a5d67bd8540d8..8d5468aff0d11f82cf89a5a816bb1bb9a9b42666 100644 (file)
--- a/src/mesa/main/texrender.c
+++ b/src/mesa/main/texrender.c
@@ -16,10 +16,13 @@
  */
 struct texture_renderbuffer
 {
-   struct gl_renderbuffer Base;   /* Base class object */
+   struct gl_renderbuffer Base;   /**< Base class object */
    struct gl_texture_image *TexImage;
    StoreTexelFunc Store;
-   GLint Zoffset;
+   GLint Yoffset;                 /**< Layer for 1D array textures. */
+   GLint Zoffset;                 /**< Layer for 2D array textures, or slice
+                                  * for 3D textures
+                                  */
 };
 
 
@@ -38,6 +41,8 @@ texture_get_row(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
    ASSERT(trb->TexImage->Width == rb->Width);
    ASSERT(trb->TexImage->Height == rb->Height);
 
+   y += trb->Yoffset;
+
    if (rb->DataType == CHAN_TYPE) {
       GLchan *rgbaOut = (GLchan *) values;
       for (i = 0; i < count; i++) {
@@ -87,15 +92,16 @@ texture_get_values(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
    if (rb->DataType == CHAN_TYPE) {
       GLchan *rgbaOut = (GLchan *) values;
       for (i = 0; i < count; i++) {
-         trb->TexImage->FetchTexelc(trb->TexImage, x[i], y[i], z,
-                                    rgbaOut + 4 * i);
+         trb->TexImage->FetchTexelc(trb->TexImage, x[i], y[i] + trb->Yoffset,
+                                   z, rgbaOut + 4 * i);
       }
    }
    else if (rb->DataType == GL_UNSIGNED_INT) {
       GLuint *zValues = (GLuint *) values;
       for (i = 0; i < count; i++) {
          GLfloat flt;
-         trb->TexImage->FetchTexelf(trb->TexImage, x[i], y[i], z, &flt);
+         trb->TexImage->FetchTexelf(trb->TexImage, x[i], y[i] + trb->Yoffset,
+                                   z, &flt);
 #if 0
          zValues[i] = (GLuint) (flt * 0xffffffff);
 #else
@@ -107,7 +113,8 @@ texture_get_values(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
       GLuint *zValues = (GLuint *) values;
       for (i = 0; i < count; i++) {
          GLfloat flt;
-         trb->TexImage->FetchTexelf(trb->TexImage, x[i], y[i], z, &flt);
+         trb->TexImage->FetchTexelf(trb->TexImage, x[i], y[i] + trb->Yoffset,
+                                   z, &flt);
          zValues[i] = ((GLuint) (flt * 0xffffff)) << 8;
       }
    }
@@ -129,6 +136,8 @@ texture_put_row(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
    const GLint z = trb->Zoffset;
    GLuint i;
 
+   y += trb->Yoffset;
+
    if (rb->DataType == CHAN_TYPE) {
       const GLchan *rgba = (const GLchan *) values;
       for (i = 0; i < count; i++) {
@@ -170,6 +179,8 @@ texture_put_mono_row(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
    const GLint z = trb->Zoffset;
    GLuint i;
 
+   y += trb->Yoffset;
+
    if (rb->DataType == CHAN_TYPE) {
       const GLchan *rgba = (const GLchan *) value;
       for (i = 0; i < count; i++) {
@@ -215,7 +226,7 @@ texture_put_values(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
       const GLchan *rgba = (const GLchan *) values;
       for (i = 0; i < count; i++) {
          if (!mask || mask[i]) {
-            trb->Store(trb->TexImage, x[i], y[i], z, rgba);
+            trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, rgba);
          }
          rgba += 4;
       }
@@ -224,7 +235,8 @@ texture_put_values(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
       const GLuint *zValues = (const GLuint *) values;
       for (i = 0; i < count; i++) {
          if (!mask || mask[i]) {
-            trb->Store(trb->TexImage, x[i], y[i], z, zValues + i);
+            trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z,
+                      zValues + i);
          }
       }
    }
@@ -233,7 +245,7 @@ texture_put_values(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
       for (i = 0; i < count; i++) {
          if (!mask || mask[i]) {
             GLfloat flt = (zValues[i] >> 8) * (1.0 / 0xffffff);
-            trb->Store(trb->TexImage, x[i], y[i], z, &flt);
+            trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &flt);
          }
       }
    }
@@ -257,7 +269,7 @@ texture_put_mono_values(GLcontext *ctx, struct gl_renderbuffer *rb,
       const GLchan *rgba = (const GLchan *) value;
       for (i = 0; i < count; i++) {
          if (!mask || mask[i]) {
-            trb->Store(trb->TexImage, x[i], y[i], z, rgba);
+            trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, rgba);
          }
       }
    }
@@ -265,7 +277,7 @@ texture_put_mono_values(GLcontext *ctx, struct gl_renderbuffer *rb,
       const GLuint zValue = *((const GLuint *) value);
       for (i = 0; i < count; i++) {
          if (!mask || mask[i]) {
-            trb->Store(trb->TexImage, x[i], y[i], z, &zValue);
+            trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &zValue);
          }
       }
    }
@@ -274,7 +286,7 @@ texture_put_mono_values(GLcontext *ctx, struct gl_renderbuffer *rb,
       const GLfloat flt = (zValue >> 8) * (1.0 / 0xffffff);
       for (i = 0; i < count; i++) {
          if (!mask || mask[i]) {
-            trb->Store(trb->TexImage, x[i], y[i], z, &flt);
+            trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &flt);
          }
       }
    }
@@ -325,7 +337,7 @@ wrap_texture(GLcontext *ctx, struct gl_renderbuffer_attachment *att)
    trb->Base.PutMonoValues = texture_put_mono_values;
 
    /* update attachment point */
-   att->Renderbuffer = &(trb->Base);
+   _mesa_reference_renderbuffer(&att->Renderbuffer, &(trb->Base));
 }
 
 
@@ -350,7 +362,14 @@ update_wrapper(GLcontext *ctx, const struct gl_renderbuffer_attachment *att)
    trb->Store = trb->TexImage->TexFormat->StoreTexel;
    ASSERT(trb->Store);
 
-   trb->Zoffset = att->Zoffset;
+   if (att->Texture->Target == GL_TEXTURE_1D_ARRAY_EXT) {
+      trb->Yoffset = att->Zoffset;
+      trb->Zoffset = 0;
+   }
+   else {
+      trb->Yoffset = 0;
+      trb->Zoffset = att->Zoffset;
+   }
 
    trb->Base.Width = trb->TexImage->Width;
    trb->Base.Height = trb->TexImage->Height;