Start adding snow shaders

diff.diff

@@ -1,105 +0,0 @@
-diff --git a/gfx/drivers_shader/shader_glsl.c b/gfx/drivers_shader/shader_glsl.c
-index 203f0c6..6cb5f9a 100644
---- a/gfx/drivers_shader/shader_glsl.c
-+++ b/gfx/drivers_shader/shader_glsl.c
-@@ -1330,15 +1330,13 @@ fallback:
- 
- #define gl_glsl_set_coord_array(attr, coord1, coord2, coords, size, multiplier) \
- { \
--      unsigned y; \
--      attr->loc    = coord1; \
--      attr->size   = multiplier; \
--      attr->offset = size * sizeof(GLfloat); \
--      attribs_size++; \
--      attr++; \
--      for (y = 0; y < (multiplier * coords->vertices); y++) \
--         buffer[y + size] = coord2[y]; \
--      size += multiplier * coords->vertices; \
-+   attr->loc    = coord1; \
-+   attr->size   = multiplier; \
-+   attr->offset = size * sizeof(GLfloat); \
-+   attribs_size++; \
-+   glBufferSubData(GL_ARRAY_BUFFER, attr->offset, multiplier * coords->vertices * sizeof(GLfloat), coord2); \
-+   size += multiplier * coords->vertices; \
-+   attr++; \
- }
- 
- static bool gl_glsl_set_coords(void *handle_data, void *shader_data, const struct video_coords *coords)
-@@ -1357,35 +1355,56 @@ static bool gl_glsl_set_coords(void *handle_data, void *shader_data, const struc
-       goto fallback;
- 
-    buffer = short_buffer;
--   if (coords->vertices > 4)
--      buffer = (GLfloat*)calloc(coords->vertices *
--            (2 + 2 + 4 + 2), sizeof(*buffer));
--
--   if (!buffer)
--      goto fallback;
- 
-    attr = attribs;
-    uni  = &glsl->uniforms[glsl->active_idx];
- 
--   if (uni->tex_coord >= 0)
--      gl_glsl_set_coord_array(attr, uni->tex_coord, coords->tex_coord, coords, size, 2);
-+   glBindBuffer(GL_ARRAY_BUFFER, glsl->vbo[glsl->active_idx].vbo_primary);
-+   {
-+      size_t i;
-+      size_t elems  = 0;
- 
--   if (uni->vertex_coord >= 0)
--      gl_glsl_set_coord_array(attr, uni->vertex_coord, coords->vertex, coords, size, 2);
-+      elems += (uni->color >= 0) * 4;
-+      elems += (uni->tex_coord >= 0) * 2;
-+      elems += (uni->vertex_coord >= 0) * 2;
-+      elems += (uni->lut_tex_coord >= 0) * 2;
- 
--   if (uni->color >= 0)
--      gl_glsl_set_coord_array(attr, uni->color, coords->color, coords, size, 4);
-+      elems *= coords->vertices;
- 
--   if (uni->lut_tex_coord >= 0)
--      gl_glsl_set_coord_array(attr, uni->lut_tex_coord, coords->lut_tex_coord, coords, size, 2);
-+      if (elems) {
- 
--   if (size)
--      gl_glsl_set_attribs(glsl,
--            glsl->vbo[glsl->active_idx].vbo_primary,
--            &glsl->vbo[glsl->active_idx].buffer_primary,
--            &glsl->vbo[glsl->active_idx].size_primary,
--            buffer, size,
--            attribs, attribs_size);
-+         glBufferData(GL_ARRAY_BUFFER, elems * sizeof(GLfloat), NULL, GL_STREAM_DRAW);
-+
-+         if (uni->tex_coord >= 0)
-+            gl_glsl_set_coord_array(attr, uni->tex_coord, coords->tex_coord, coords, size, 2);
-+
-+         if (uni->vertex_coord >= 0)
-+            gl_glsl_set_coord_array(attr, uni->vertex_coord, coords->vertex, coords, size, 2);
-+
-+         if (uni->color >= 0)
-+            gl_glsl_set_coord_array(attr, uni->color, coords->color, coords, size, 4);
-+
-+         if (uni->lut_tex_coord >= 0)
-+            gl_glsl_set_coord_array(attr, uni->lut_tex_coord, coords->lut_tex_coord, coords, size, 2);
-+
-+         for (i = 0; i < attribs_size; i++)
-+         {
-+            GLint loc = attribs[i].loc;
-+
-+            if (glsl->attribs.index < ARRAY_SIZE(glsl->attribs.elems))
-+            {
-+               glEnableVertexAttribArray(loc);
-+               glVertexAttribPointer(loc, attribs[i].size, GL_FLOAT, GL_FALSE, 0,
-+                     (const GLvoid*)(uintptr_t)attribs[i].offset);
-+               glsl->attribs.elems[glsl->attribs.index++] = loc;
-+            }
-+            else
-+               RARCH_WARN("Attrib array buffer was overflown!\n");
-+         }
-+      }
-+
-+   }
-+   glBindBuffer(GL_ARRAY_BUFFER, 0);
- 
-    if (buffer != short_buffer)
-       free(buffer);