GPU: remove 'GPU_SHADER_3D_IMAGE_MODULATE_ALPHA'

`GPU_SHADER_3D_IMAGE_MODULATE_ALPHA` can be seamlessly replaced by
`GPU_SHADER_3D_IMAGE_COLOR` with no real harm done.

5 files changed, 0 insertions, 43 deletions

diff --git a/source/blender/gpu/CMakeLists.txt b/source/blender/gpu/CMakeLists.txt
index 152df8cb592..7ceebc37fb4 100644
--- a/source/blender/gpu/CMakeLists.txt
+++ b/source/blender/gpu/CMakeLists.txt
@@ -281,7 +281,6 @@ set(GLSL_SRC
   shaders/gpu_shader_image_desaturate_frag.glsl
   shaders/gpu_shader_image_overlays_merge_frag.glsl
   shaders/gpu_shader_image_overlays_stereo_merge_frag.glsl
-  shaders/gpu_shader_image_modulate_alpha_frag.glsl
   shaders/gpu_shader_image_shuffle_color_frag.glsl
   shaders/gpu_shader_image_color_frag.glsl
   shaders/gpu_shader_image_varying_color_frag.glsl
@@ -589,7 +588,6 @@ set(SRC_SHADER_CREATE_INFOS
   shaders/infos/gpu_shader_3D_depth_only_info.hh
   shaders/infos/gpu_shader_3D_flat_color_info.hh
   shaders/infos/gpu_shader_3D_image_info.hh
-  shaders/infos/gpu_shader_3D_image_modulate_alpha_info.hh
   shaders/infos/gpu_shader_3D_point_info.hh
   shaders/infos/gpu_shader_3D_polyline_info.hh
   shaders/infos/gpu_shader_3D_smooth_color_info.hh
diff --git a/source/blender/gpu/GPU_shader.h b/source/blender/gpu/GPU_shader.h
index 0db61bedc2c..35ed0f6678e 100644
--- a/source/blender/gpu/GPU_shader.h
+++ b/source/blender/gpu/GPU_shader.h
@@ -295,15 +295,6 @@ typedef enum eGPUBuiltinShader {
    * \param pos: in vec3
    */
   GPU_SHADER_3D_IMAGE_COLOR,
-  /**
-   * Draw texture with alpha. Take a 3D position and a 2D texture coordinate for each vertex.
-   *
-   * \param alpha: uniform float
-   * \param image: uniform sampler2D
-   * \param texCoord: in vec2
-   * \param pos: in vec3
-   */
-  GPU_SHADER_3D_IMAGE_MODULATE_ALPHA,
   /* points */
   /**
    * Draw round points with a constant size.
diff --git a/source/blender/gpu/intern/gpu_shader_builtin.c b/source/blender/gpu/intern/gpu_shader_builtin.c
index 7973c635cb8..2944905f2dd 100644
--- a/source/blender/gpu/intern/gpu_shader_builtin.c
+++ b/source/blender/gpu/intern/gpu_shader_builtin.c
@@ -141,11 +141,6 @@ static const GPUShaderStages builtin_shader_stages[GPU_SHADER_BUILTIN_LEN] = {
             .name = "GPU_SHADER_3D_IMAGE_COLOR",
             .create_info = "gpu_shader_3D_image_color",
         },
-    [GPU_SHADER_3D_IMAGE_MODULATE_ALPHA] =
-        {
-            .name = "GPU_SHADER_3D_IMAGE_MODULATE_ALPHA",
-            .create_info = "gpu_shader_3D_image_modulate_alpha",
-        },
     [GPU_SHADER_2D_CHECKER] =
         {
             .name = "GPU_SHADER_2D_CHECKER",
diff --git a/source/blender/gpu/shaders/gpu_shader_image_modulate_alpha_frag.glsl b/source/blender/gpu/shaders/gpu_shader_image_modulate_alpha_frag.glsl
deleted file mode 100644
index 26f96a5da32..00000000000
--- a/source/blender/gpu/shaders/gpu_shader_image_modulate_alpha_frag.glsl
+++ /dev/null
@@ -1,6 +0,0 @@
-
-void main()
-{
-  fragColor = texture(image, texCoord_interp);
-  fragColor.a *= alpha;
-}
diff --git a/source/blender/gpu/shaders/infos/gpu_shader_3D_image_modulate_alpha_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_3D_image_modulate_alpha_info.hh
deleted file mode 100644
index 35ddaa5c71c..00000000000
--- a/source/blender/gpu/shaders/infos/gpu_shader_3D_image_modulate_alpha_info.hh
+++ /dev/null
@@ -1,21 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later
- * Copyright 2022 Blender Foundation. All rights reserved. */
-
-/** \file
- * \ingroup gpu
- */
-
-#include "gpu_interface_info.hh"
-#include "gpu_shader_create_info.hh"
-
-GPU_SHADER_CREATE_INFO(gpu_shader_3D_image_modulate_alpha)
-    .vertex_in(0, Type::VEC3, "pos")
-    .vertex_in(1, Type::VEC2, "texCoord")
-    .vertex_out(smooth_tex_coord_interp_iface)
-    .fragment_out(0, Type::VEC4, "fragColor")
-    .push_constant(Type::MAT4, "ModelViewProjectionMatrix")
-    .push_constant(Type::FLOAT, "alpha")
-    .sampler(0, ImageType::FLOAT_2D, "image", Frequency::PASS)
-    .vertex_source("gpu_shader_3D_image_vert.glsl")
-    .fragment_source("gpu_shader_image_modulate_alpha_frag.glsl")
-    .do_static_compilation(true);