Revert "Cleanup: remove image->bindcode, always wrap in GPUTexture."

This reverts commit 8242a5bc853a74da1273fc7ad4b959ac716c563c. This isn't
quite ready to use yet.

9 files changed, 156 insertions, 104 deletions

diff --git a/source/blender/blenkernel/BKE_image.h b/source/blender/blenkernel/BKE_image.h
index 546204b5eef..fc018dbfe81 100644
--- a/source/blender/blenkernel/BKE_image.h
+++ b/source/blender/blenkernel/BKE_image.h
@@ -271,7 +271,7 @@ bool BKE_image_scale(struct Image *image, int width, int height);
 bool BKE_image_has_alpha(struct Image *image);
 
 /* check if texture has gpu texture code */
-bool BKE_image_has_opengl_texture(struct Image *ima);
+bool BKE_image_has_bindcode(struct Image *ima);
 
 void BKE_image_get_size(struct Image *image, struct ImageUser *iuser, int *width, int *height);
 void BKE_image_get_size_fl(struct Image *image, struct ImageUser *iuser, float size[2]);
diff --git a/source/blender/blenkernel/intern/image.c b/source/blender/blenkernel/intern/image.c
index b6b3dd31096..c1ecabcfb5a 100644
--- a/source/blender/blenkernel/intern/image.c
+++ b/source/blender/blenkernel/intern/image.c
@@ -473,6 +473,7 @@ void BKE_image_copy_data(Main *UNUSED(bmain), Image *ima_dst, const Image *ima_s
 	BLI_listbase_clear(&ima_dst->anims);
 
 	for (int i = 0; i < TEXTARGET_COUNT; i++) {
+		ima_dst->bindcode[i] = 0;
 		ima_dst->gputexture[i] = NULL;
 	}
 
@@ -537,14 +538,16 @@ bool BKE_image_scale(Image *image, int width, int height)
 	return (ibuf != NULL);
 }
 
-bool BKE_image_has_opengl_texture(Image *ima)
+bool BKE_image_has_bindcode(Image *ima)
 {
+	bool has_bindcode = false;
 	for (int i = 0; i < TEXTARGET_COUNT; i++) {
-		if (ima->gputexture[i]) {
-			return true;
+		if (ima->bindcode[i]) {
+			has_bindcode = true;
+			break;
 		}
 	}
-	return false;
+	return has_bindcode;
 }
 
 static void image_init_color_management(Image *ima)
@@ -927,6 +930,21 @@ void BKE_image_tag_time(Image *ima)
 	ima->lastused = PIL_check_seconds_timer_i();
 }
 
+#if 0
+static void tag_all_images_time(Main *bmain)
+{
+	Image *ima;
+	int ctime = PIL_check_seconds_timer_i();
+
+	ima = bmain->image.first;
+	while (ima) {
+		if (ima->bindcode || ima->repbind || ima->ibufs.first) {
+			ima->lastused = ctime;
+		}
+	}
+}
+#endif
+
 static uintptr_t image_mem_size(Image *image)
 {
 	uintptr_t size = 0;
diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c
index 8807cbc1d21..039af3cfa61 100644
--- a/source/blender/blenloader/intern/readfile.c
+++ b/source/blender/blenloader/intern/readfile.c
@@ -1681,6 +1681,7 @@ void blo_end_image_pointer_map(FileData *fd, Main *oldmain)
 		if (ima->cache == NULL) {
 			ima->tpageflag &= ~IMA_GLBIND_IS_DATA;
 			for (i = 0; i < TEXTARGET_COUNT; i++) {
+				ima->bindcode[i] = 0;
 				ima->gputexture[i] = NULL;
 			}
 			ima->rr = NULL;
@@ -3915,6 +3916,7 @@ static void direct_link_image(FileData *fd, Image *ima)
 	if (!ima->cache) {
 		ima->tpageflag &= ~IMA_GLBIND_IS_DATA;
 		for (int i = 0; i < TEXTARGET_COUNT; i++) {
+			ima->bindcode[i] = 0;
 			ima->gputexture[i] = NULL;
 		}
 		ima->rr = NULL;
diff --git a/source/blender/gpu/GPU_texture.h b/source/blender/gpu/GPU_texture.h
index e58d5d92831..09b351a544a 100644
--- a/source/blender/gpu/GPU_texture.h
+++ b/source/blender/gpu/GPU_texture.h
@@ -161,7 +161,6 @@ GPUTexture *GPU_texture_create_from_vertbuf(
 GPUTexture *GPU_texture_create_buffer(
         GPUTextureFormat data_type, const uint buffer);
 
-GPUTexture *GPU_texture_from_bindcode(int textarget, int bindcode);
 GPUTexture *GPU_texture_from_blender(
         struct Image *ima, struct ImageUser *iuser, int textarget, bool is_data, double time, int mipmap);
 GPUTexture *GPU_texture_from_preview(struct PreviewImage *prv, int mipmap);
diff --git a/source/blender/gpu/intern/gpu_draw.c b/source/blender/gpu/intern/gpu_draw.c
index 0c9832f20b3..7bfebb702a1 100644
--- a/source/blender/gpu/intern/gpu_draw.c
+++ b/source/blender/gpu/intern/gpu_draw.c
@@ -127,6 +127,8 @@ static int smaller_power_of_2_limit(int num)
 /* Current OpenGL state caching for GPU_set_tpage */
 
 static struct GPUTextureState {
+	Image *ima, *curima;
+
 	/* also controls min/mag filtering */
 	bool domipmap;
 	/* only use when 'domipmap' is set */
@@ -134,9 +136,10 @@ static struct GPUTextureState {
 	/* store this so that new images created while texture painting won't be set to mipmapped */
 	bool texpaint;
 
+	int alphablend;
 	float anisotropic;
 	int gpu_mipmap;
-} GTS = {1, 0, 0, 1.0f, 0};
+} GTS = {NULL, NULL, 1, 0, 0, -1, 1.0f, 0};
 
 /* Mipmap settings */
 
@@ -224,14 +227,16 @@ float GPU_get_anisotropic(void)
 
 /* Set OpenGL state for an MTFace */
 
-static GPUTexture **gpu_get_image_gputexture(Image *ima, GLenum textarget)
+static unsigned int *gpu_get_image_bindcode(Image *ima, GLenum textarget)
 {
+	unsigned int *bind = 0;
+
 	if (textarget == GL_TEXTURE_2D)
-		return &ima->gputexture[TEXTARGET_TEXTURE_2D];
+		bind = &ima->bindcode[TEXTARGET_TEXTURE_2D];
 	else if (textarget == GL_TEXTURE_CUBE_MAP)
-		return &ima->gputexture[TEXTARGET_TEXTURE_CUBE_MAP];
+		bind = &ima->bindcode[TEXTARGET_TEXTURE_CUBE_MAP];
 
-	return NULL;
+	return bind;
 }
 
 typedef struct VerifyThreadData {
@@ -284,38 +289,33 @@ static void gpu_verify_high_bit_srgb_buffer(float *srgb_frect,
 	}
 }
 
-GPUTexture *GPU_texture_from_blender(Image *ima,
-                                     ImageUser *iuser,
-                                     int textarget,
-                                     bool is_data,
-                                     double UNUSED(time),
-                                     int mipmap)
+int GPU_verify_image(
+        Image *ima, ImageUser *iuser,
+        int textarget, bool compare, bool mipmap, bool is_data)
 {
-	/* check if we have a valid image */
-	if (ima == NULL || ima->ok == 0) {
-		return NULL;
-	}
+	unsigned int *bind = NULL;
+	int tpx = 0, tpy = 0;
+	unsigned int *rect = NULL;
+	float *frect = NULL;
+	float *srgb_frect = NULL;
+	/* flag to determine whether deep format is used */
+	bool use_high_bit_depth = false, do_color_management = false;
 
-	/* currently, tpage refresh is used by ima sequences */
-	if (ima->tpageflag & IMA_TPAGE_REFRESH) {
-		GPU_free_image(ima);
-		ima->tpageflag &= ~IMA_TPAGE_REFRESH;
-	}
+	GTS.ima = ima;
 
-	/* Test if we already have a texture. */
-	GPUTexture **tex = gpu_get_image_gputexture(ima, textarget);
-	if (*tex) {
-		return *tex;
+	if (compare && ima == GTS.curima) {
+		return (ima != NULL);
 	}
 
+	/* check if we have a valid image */
+	if (ima == NULL || ima->ok == 0)
+		return 0;
+
 	/* check if we have a valid image buffer */
 	ImBuf *ibuf = BKE_image_acquire_ibuf(ima, iuser, NULL);
-	if (ibuf == NULL) {
-		return NULL;
-	}
 
-	/* flag to determine whether deep format is used */
-	bool use_high_bit_depth = false, do_color_management = false;
+	if (ibuf == NULL)
+		return 0;
 
 	if (ibuf->rect_float) {
 		if (U.use_16bit_textures) {
@@ -337,38 +337,54 @@ GPUTexture *GPU_texture_from_blender(Image *ima,
 		}
 	}
 
-	const int rectw = ibuf->x;
-	const int recth = ibuf->y;
-	unsigned int *rect = ibuf->rect;
-	float *frect = NULL;
-	float *srgb_frect = NULL;
+	/* currently, tpage refresh is used by ima sequences */
+	if (ima->tpageflag & IMA_TPAGE_REFRESH) {
+		GPU_free_image(ima);
+		ima->tpageflag &= ~IMA_TPAGE_REFRESH;
+	}
 
-	if (use_high_bit_depth) {
-		if (do_color_management) {
-			frect = srgb_frect = MEM_mallocN(ibuf->x * ibuf->y * sizeof(*srgb_frect) * 4, "floar_buf_col_cor");
-			gpu_verify_high_bit_srgb_buffer(srgb_frect, ibuf);
-		}
-		else {
-			frect = ibuf->rect_float;
+	{
+		/* regular image mode */
+		bind = gpu_get_image_bindcode(ima, textarget);
+
+		if (*bind == 0) {
+			tpx = ibuf->x;
+			tpy = ibuf->y;
+			rect = ibuf->rect;
+			if (use_high_bit_depth) {
+				if (do_color_management) {
+					frect = srgb_frect = MEM_mallocN(ibuf->x * ibuf->y * sizeof(*srgb_frect) * 4, "floar_buf_col_cor");
+					gpu_verify_high_bit_srgb_buffer(srgb_frect, ibuf);
+				}
+				else
+					frect = ibuf->rect_float;
+			}
 		}
 	}
 
-	unsigned int bindcode = 0;
+	if (*bind != 0) {
+		/* enable opengl drawing with textures */
+		glBindTexture(textarget, *bind);
+		BKE_image_release_ibuf(ima, ibuf, NULL);
+		return *bind;
+	}
+
+	const int rectw = tpx;
+	const int recth = tpy;
+
 #ifdef WITH_DDS
 	if (ibuf->ftype == IMB_FTYPE_DDS)
-		GPU_create_gl_tex_compressed(&bindcode, rect, rectw, recth, textarget, mipmap, ima, ibuf);
+		GPU_create_gl_tex_compressed(bind, rect, rectw, recth, textarget, mipmap, ima, ibuf);
 	else
 #endif
-		GPU_create_gl_tex(&bindcode, rect, frect, rectw, recth, textarget, mipmap, use_high_bit_depth, ima);
+		GPU_create_gl_tex(bind, rect, frect, rectw, recth, textarget, mipmap, use_high_bit_depth, ima);
 
 	/* mark as non-color data texture */
-	if (bindcode) {
+	if (*bind) {
 		if (is_data)
 			ima->tpageflag |= IMA_GLBIND_IS_DATA;
 		else
 			ima->tpageflag &= ~IMA_GLBIND_IS_DATA;
-
-		*tex = GPU_texture_from_bindcode(textarget, bindcode);
 	}
 
 	/* clean up */
@@ -377,7 +393,7 @@ GPUTexture *GPU_texture_from_blender(Image *ima,
 
 	BKE_image_release_ibuf(ima, ibuf, NULL);
 
-	return *tex;
+	return *bind;
 }
 
 static void **gpu_gen_cube_map(unsigned int *rect, float *frect, int rectw, int recth, bool use_high_bit_depth)
@@ -578,8 +594,6 @@ void GPU_create_gl_tex(
 	if (GLEW_EXT_texture_filter_anisotropic)
 		glTexParameterf(textarget, GL_TEXTURE_MAX_ANISOTROPY_EXT, GPU_get_anisotropic());
 
-	glBindTexture(textarget, 0);
-
 	if (ibuf)
 		IMB_freeImBuf(ibuf);
 }
@@ -666,8 +680,6 @@ void GPU_create_gl_tex_compressed(
 		glDeleteTextures(1, (GLuint *)bind);
 		GPU_create_gl_tex(bind, pix, NULL, x, y, textarget, mipmap, 0, ima);
 	}
-
-	glBindTexture(textarget, 0);
 #endif
 }
 
@@ -684,13 +696,17 @@ void GPU_paint_set_mipmap(bool mipmap)
 
 	if (mipmap) {
 		for (Image *ima = G.main->image.first; ima; ima = ima->id.next) {
-			if (BKE_image_has_opengl_texture(ima)) {
+			if (BKE_image_has_bindcode(ima)) {
 				if (ima->tpageflag & IMA_MIPMAP_COMPLETE) {
-					if (ima->gputexture[TEXTARGET_TEXTURE_2D]) {
-						GPU_texture_bind(ima->gputexture[TEXTARGET_TEXTURE_2D], 0);
+					if (ima->bindcode[TEXTARGET_TEXTURE_2D]) {
+						glBindTexture(GL_TEXTURE_2D, ima->bindcode[TEXTARGET_TEXTURE_2D]);
 						glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gpu_get_mipmap_filter(0));
 						glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gpu_get_mipmap_filter(1));
-						GPU_texture_unbind(ima->gputexture[TEXTARGET_TEXTURE_2D]);
+					}
+					if (ima->bindcode[TEXTARGET_TEXTURE_CUBE_MAP]) {
+						glBindTexture(GL_TEXTURE_CUBE_MAP, ima->bindcode[TEXTARGET_TEXTURE_CUBE_MAP]);
+						glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, gpu_get_mipmap_filter(0));
+						glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, gpu_get_mipmap_filter(1));
 					}
 				}
 				else
@@ -703,12 +719,16 @@ void GPU_paint_set_mipmap(bool mipmap)
 	}
 	else {
 		for (Image *ima = G.main->image.first; ima; ima = ima->id.next) {
-			if (BKE_image_has_opengl_texture(ima)) {
-				if (ima->gputexture[TEXTARGET_TEXTURE_2D]) {
-					GPU_texture_bind(ima->gputexture[TEXTARGET_TEXTURE_2D], 0);
+			if (BKE_image_has_bindcode(ima)) {
+				if (ima->bindcode[TEXTARGET_TEXTURE_2D]) {
+					glBindTexture(GL_TEXTURE_2D, ima->bindcode[TEXTARGET_TEXTURE_2D]);
 					glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 					glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gpu_get_mipmap_filter(1));
-					GPU_texture_unbind(ima->gputexture[TEXTARGET_TEXTURE_2D]);
+				}
+				if (ima->bindcode[TEXTARGET_TEXTURE_CUBE_MAP]) {
+					glBindTexture(GL_TEXTURE_CUBE_MAP, ima->bindcode[TEXTARGET_TEXTURE_CUBE_MAP]);
+					glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+					glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, gpu_get_mipmap_filter(1));
 				}
 			}
 			else
@@ -741,13 +761,12 @@ static bool gpu_check_scaled_image(ImBuf *ibuf, Image *ima, float *frect, int x,
 		if (rectw + x > x_limit) rectw--;
 		if (recth + y > y_limit) recth--;
 
-		GPU_texture_bind(ima->gputexture[TEXTARGET_TEXTURE_2D], 0);
-
 		/* float rectangles are already continuous in memory so we can use IMB_scaleImBuf */
 		if (frect) {
 			ImBuf *ibuf_scale = IMB_allocFromBuffer(NULL, frect, w, h);
 			IMB_scaleImBuf(ibuf_scale, rectw, recth);
 
+			glBindTexture(GL_TEXTURE_2D, ima->bindcode[TEXTARGET_TEXTURE_2D]);
 			glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, rectw, recth, GL_RGBA,
 			                GL_FLOAT, ibuf_scale->rect_float);
 
@@ -767,7 +786,7 @@ static bool gpu_check_scaled_image(ImBuf *ibuf, Image *ima, float *frect, int x,
 					bilinear_interpolation_color_wrap(ibuf, (unsigned char *)(p + i + j * (rectw)), NULL, u, v);
 				}
 			}
-
+			glBindTexture(GL_TEXTURE_2D, ima->bindcode[TEXTARGET_TEXTURE_2D]);
 			glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, rectw, recth, GL_RGBA,
 			                GL_UNSIGNED_BYTE, scalerect);
 
@@ -781,8 +800,6 @@ static bool gpu_check_scaled_image(ImBuf *ibuf, Image *ima, float *frect, int x,
 			ima->tpageflag &= ~IMA_MIPMAP_COMPLETE;
 		}
 
-		GPU_texture_unbind(ima->gputexture[TEXTARGET_TEXTURE_2D]);
-
 		return true;
 	}
 
@@ -794,7 +811,7 @@ void GPU_paint_update_image(Image *ima, ImageUser *iuser, int x, int y, int w, i
 	ImBuf *ibuf = BKE_image_acquire_ibuf(ima, iuser, NULL);
 
 	if ((!GTS.gpu_mipmap && GPU_get_mipmap()) ||
-	    (ima->gputexture[TEXTARGET_TEXTURE_2D] == NULL) ||
+	    (ima->bindcode[TEXTARGET_TEXTURE_2D] == 0) ||
 	    (ibuf == NULL) ||
 	    (w == 0) || (h == 0))
 	{
@@ -818,7 +835,7 @@ void GPU_paint_update_image(Image *ima, ImageUser *iuser, int x, int y, int w, i
 				return;
 			}
 
-			GPU_texture_bind(ima->gputexture[TEXTARGET_TEXTURE_2D], 0);
+			glBindTexture(GL_TEXTURE_2D, ima->bindcode[TEXTARGET_TEXTURE_2D]);
 			glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, w, h, GL_RGBA, GL_FLOAT, buffer);
 
 			MEM_freeN(buffer);
@@ -832,8 +849,6 @@ void GPU_paint_update_image(Image *ima, ImageUser *iuser, int x, int y, int w, i
 				ima->tpageflag &= ~IMA_MIPMAP_COMPLETE;
 			}
 
-			GPU_texture_unbind(ima->gputexture[TEXTARGET_TEXTURE_2D]);
-
 			BKE_image_release_ibuf(ima, ibuf, NULL);
 			return;
 		}
@@ -843,7 +858,7 @@ void GPU_paint_update_image(Image *ima, ImageUser *iuser, int x, int y, int w, i
 			return;
 		}
 
-		GPU_texture_bind(ima->gputexture[TEXTARGET_TEXTURE_2D], 0);
+		glBindTexture(GL_TEXTURE_2D, ima->bindcode[TEXTARGET_TEXTURE_2D]);
 
 		glGetIntegerv(GL_UNPACK_ROW_LENGTH, &row_length);
 		glGetIntegerv(GL_UNPACK_SKIP_PIXELS, &skip_pixels);
@@ -867,8 +882,6 @@ void GPU_paint_update_image(Image *ima, ImageUser *iuser, int x, int y, int w, i
 		else {
 			ima->tpageflag &= ~IMA_MIPMAP_COMPLETE;
 		}
-
-		GPU_texture_unbind(ima->gputexture[TEXTARGET_TEXTURE_2D]);
 	}
 
 	BKE_image_release_ibuf(ima, ibuf, NULL);
@@ -1003,6 +1016,11 @@ void GPU_free_image(Image *ima)
 	}
 
 	for (int i = 0; i < TEXTARGET_COUNT; i++) {
+		/* free regular image binding */
+		if (ima->bindcode[i]) {
+			glDeleteTextures(1, (GLuint *)&ima->bindcode[i]);
+			ima->bindcode[i] = 0;
+		}
 		/* free glsl image binding */
 		if (ima->gputexture[i]) {
 			GPU_texture_free(ima->gputexture[i]);
@@ -1053,7 +1071,7 @@ void GPU_free_images_old(void)
 		if ((ima->flag & IMA_NOCOLLECT) == 0 && ctime - ima->lastused > U.textimeout) {
 			/* If it's in GL memory, deallocate and set time tag to current time
 			 * This gives textures a "second chance" to be used before dying. */
-			if (BKE_image_has_opengl_texture(ima)) {
+			if (BKE_image_has_bindcode(ima)) {
 				GPU_free_image(ima);
 				ima->lastused = ctime;
 			}
diff --git a/source/blender/gpu/intern/gpu_texture.c b/source/blender/gpu/intern/gpu_texture.c
index 4bb26128aa2..aac75014b3e 100644
--- a/source/blender/gpu/intern/gpu_texture.c
+++ b/source/blender/gpu/intern/gpu_texture.c
@@ -79,6 +79,7 @@ struct GPUTexture {
 	GLenum target_base; /* same as target, (but no multisample)
 	                     * use it for unbinding */
 	GLuint bindcode;    /* opengl identifier for texture */
+	int fromblender;    /* we got the texture from Blender */
 
 	GPUTextureFormat format;
 	GPUTextureFormatFlag format_flag;
@@ -672,24 +673,42 @@ GPUTexture *GPU_texture_create_buffer(GPUTextureFormat data_type, const GLuint b
 	return tex;
 }
 
-GPUTexture *GPU_texture_from_bindcode(int textarget, int bindcode)
+GPUTexture *GPU_texture_from_blender(Image *ima, ImageUser *iuser, int textarget, bool is_data, double UNUSED(time), int mipmap)
 {
+	int gputt;
+	/* this binds a texture, so that's why to restore it to 0 */
+	GLint bindcode = GPU_verify_image(ima, iuser, textarget, 0, mipmap, is_data);
+
 	/* see GPUInput::textarget: it can take two values - GL_TEXTURE_2D and GL_TEXTURE_CUBE_MAP
 	 * these values are correct for glDisable, so textarget can be safely used in
 	 * GPU_texture_bind/GPU_texture_unbind through tex->target_base */
 	/* (is any of this obsolete now that we don't glEnable/Disable textures?) */
+	if (textarget == GL_TEXTURE_2D)
+		gputt = TEXTARGET_TEXTURE_2D;
+	else
+		gputt = TEXTARGET_TEXTURE_CUBE_MAP;
+
+	if (ima->gputexture[gputt]) {
+		ima->gputexture[gputt]->bindcode = bindcode;
+		glBindTexture(textarget, 0);
+		return ima->gputexture[gputt];
+	}
+
 	GPUTexture *tex = MEM_callocN(sizeof(GPUTexture), "GPUTexture");
 	tex->bindcode = bindcode;
 	tex->number = -1;
 	tex->refcount = 1;
 	tex->target = textarget;
 	tex->target_base = textarget;
+	tex->fromblender = 1;
 	tex->format = -1;
 	tex->components = -1;
 	tex->samples = 0;
 
+	ima->gputexture[gputt] = tex;
+
 	if (!glIsTexture(tex->bindcode)) {
-		GPU_print_error_debug("Invalid bindcode in GPU_texture_from_bindcode");
+		GPU_print_error_debug("Blender Texture Not Loaded");
 	}
 	else {
 		GLint w, h;
@@ -706,9 +725,10 @@ GPUTexture *GPU_texture_from_bindcode(int textarget, int bindcode)
 		glGetTexLevelParameteriv(gettarget, 0, GL_TEXTURE_HEIGHT, &h);
 		tex->w = w;
 		tex->h = h;
-		glBindTexture(textarget, 0);
 	}
 
+	glBindTexture(textarget, 0);
+
 	return tex;
 }
 
@@ -1070,6 +1090,9 @@ void GPU_texture_wrap_mode(GPUTexture *tex, bool use_repeat)
 
 static void gpu_texture_delete(GPUTexture *tex)
 {
+	if (tex->bindcode && !tex->fromblender)
+		glDeleteTextures(1, &tex->bindcode);
+
 	gpu_texture_memory_footprint_remove(tex);
 
 	MEM_freeN(tex);
diff --git a/source/blender/makesdna/DNA_image_types.h b/source/blender/makesdna/DNA_image_types.h
index 327b77f12b3..3d29c5b3833 100644
--- a/source/blender/makesdna/DNA_image_types.h
+++ b/source/blender/makesdna/DNA_image_types.h
@@ -118,6 +118,7 @@ typedef struct Image {
 	/* texture page */
 	short tpageflag;
 	short pad2;
+	unsigned int bindcode[2]; /* only for current image... 2 = TEXTARGET_COUNT */
 	unsigned int pad3;
 
 	struct PackedFile *packedfile DNA_DEPRECATED; /* deprecated */
diff --git a/source/blender/makesrna/intern/rna_image.c b/source/blender/makesrna/intern/rna_image.c
index 9f6552e4587..cf486ee399f 100644
--- a/source/blender/makesrna/intern/rna_image.c
+++ b/source/blender/makesrna/intern/rna_image.c
@@ -298,13 +298,6 @@ static void rna_Image_resolution_set(PointerRNA *ptr, const float *values)
 	BKE_image_release_ibuf(im, ibuf, lock);
 }
 
-static int rna_Image_bindcode_get(PointerRNA *ptr)
-{
-	Image *ima = (Image *)ptr->data;
-	GPUTexture *tex = ima->gputexture[TEXTARGET_TEXTURE_2D];
-	return (tex) ? GPU_texture_opengl_bindcode(tex) : 0;
-}
-
 static int rna_Image_depth_get(PointerRNA *ptr)
 {
 	Image *im = (Image *)ptr->data;
@@ -803,7 +796,7 @@ static void rna_def_image(BlenderRNA *brna)
 	RNA_def_property_update(prop, NC_IMAGE | ND_DISPLAY, NULL);
 
 	prop = RNA_def_property(srna, "bindcode", PROP_INT, PROP_UNSIGNED);
-	RNA_def_property_int_funcs(prop, "rna_Image_bindcode_get", NULL, NULL);
+	RNA_def_property_int_sdna(prop, NULL, "bindcode");
 	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
 	RNA_def_property_ui_text(prop, "Bindcode", "OpenGL bindcode");
 	RNA_def_property_update(prop, NC_IMAGE | ND_DISPLAY, NULL);
diff --git a/source/blender/makesrna/intern/rna_image_api.c b/source/blender/makesrna/intern/rna_image_api.c
index 854036cc1dc..39164430140 100644
--- a/source/blender/makesrna/intern/rna_image_api.c
+++ b/source/blender/makesrna/intern/rna_image_api.c
@@ -220,30 +220,29 @@ static void rna_Image_scale(Image *image, ReportList *reports, int width, int he
 
 static int rna_Image_gl_load(Image *image, ReportList *reports, int frame, int filter, int mag)
 {
-	GPUTexture *tex = image->gputexture[TEXTARGET_TEXTURE_2D];
+	ImBuf *ibuf;
+	unsigned int *bind = &image->bindcode[TEXTARGET_TEXTURE_2D];
 	int error = GL_NO_ERROR;
+	ImageUser iuser = {NULL};
+	void *lock;
 
-	if (*tex)
+	if (*bind)
 		return error;
-
-	ImageUser iuser = {NULL};
 	iuser.framenr = frame;
 	iuser.ok = true;
 
-	void *lock;
-	ImBuf *ibuf = BKE_image_acquire_ibuf(image, &iuser, &lock);
+	ibuf = BKE_image_acquire_ibuf(image, &iuser, &lock);
 
 	/* clean glError buffer */
 	while (glGetError() != GL_NO_ERROR) {}
 
 	if (ibuf == NULL || ibuf->rect == NULL) {
 		BKE_reportf(reports, RPT_ERROR, "Image '%s' does not have any image data", image->id.name + 2);
-		BKE_image_release_ibuf(image, ibuf, lock);
+		BKE_image_release_ibuf(image, ibuf, NULL);
 		return (int)GL_INVALID_OPERATION;
 	}
 
-	int bindcode = 0;
-	GPU_create_gl_tex(&bindcode, ibuf->rect, ibuf->rect_float, ibuf->x, ibuf->y, GL_TEXTURE_2D,
+	GPU_create_gl_tex(bind, ibuf->rect, ibuf->rect_float, ibuf->x, ibuf->y, GL_TEXTURE_2D,
 	                  (filter != GL_NEAREST && filter != GL_LINEAR), false, image);
 
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, (GLint)filter);
@@ -255,23 +254,22 @@ static int rna_Image_gl_load(Image *image, ReportList *reports, int frame, int f
 
 	if (error) {
 		glDeleteTextures(1, (GLuint *)bind);
-	}
-	else {
-		image->gputexture[TEXTARGET_TEXTURE_2D] = GPU_texture_from_bindcode(GL_TEXTURE_2D, bindcode);
+		image->bindcode[TEXTARGET_TEXTURE_2D] = 0;
 	}
 
-	BKE_image_release_ibuf(image, ibuf, lock);
+	BKE_image_release_ibuf(image, ibuf, NULL);
 
 	return error;
 }
 
 static int rna_Image_gl_touch(Image *image, ReportList *reports, int frame, int filter, int mag)
 {
+	unsigned int *bind = &image->bindcode[TEXTARGET_TEXTURE_2D];
 	int error = GL_NO_ERROR;
 
 	BKE_image_tag_time(image);
 
-	if (image->gputexture[TEXTARGET_TEXTURE_2D] == NULL)
+	if (*bind == 0)
 		error = rna_Image_gl_load(image, reports, frame, filter, mag);
 
 	return error;