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gl renderer: Render GL textures upside down

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These come from an FBO so we need to flip the texture coords on the y
axis, just like we do everywhere else.
This commit is contained in:
Timm Bäder 2018-01-18 08:21:11 +01:00
parent 182272c0ab
commit 41a922928e
1 changed files with 31 additions and 4 deletions
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35
gsk/gl/gskglrenderer.c
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@ -584,9 +584,12 @@ render_color_node (GskGLRenderer *self,
static inline void
render_texture_node (GskGLRenderer *self,
GskRenderNode *node,
RenderOpBuilder *builder,
const GskQuadVertex *vertex_data)
RenderOpBuilder *builder)
{
const float min_x = builder->dx + node->bounds.origin.x;
const float min_y = builder->dy + node->bounds.origin.y;
const float max_x = min_x + node->bounds.size.width;
const float max_y = min_y + node->bounds.size.height;
GdkTexture *texture = gsk_texture_node_get_texture (node);
int gl_min_filter = GL_NEAREST, gl_mag_filter = GL_NEAREST;
int texture_id;
@ -599,7 +602,31 @@ render_texture_node (GskGLRenderer *self,
gl_mag_filter);
ops_set_program (builder, &self->blit_program);
ops_set_texture (builder, texture_id);
ops_draw (builder, vertex_data);
if (GDK_IS_GL_TEXTURE (texture))
{
ops_draw (builder, (GskQuadVertex[GL_N_VERTICES]) {
{ { min_x, min_y }, { 0, 1 }, },
{ { min_x, max_y }, { 0, 0 }, },
{ { max_x, min_y }, { 1, 1 }, },
{ { max_x, max_y }, { 1, 0 }, },
{ { min_x, max_y }, { 0, 0 }, },
{ { max_x, min_y }, { 1, 1 }, },
});
}
else
{
ops_draw (builder, (GskQuadVertex[GL_N_VERTICES]) {
{ { min_x, min_y }, { 0, 0 }, },
{ { min_x, max_y }, { 0, 1 }, },
{ { max_x, min_y }, { 1, 0 }, },
{ { max_x, max_y }, { 1, 1 }, },
{ { min_x, max_y }, { 0, 1 }, },
{ { max_x, min_y }, { 1, 0 }, },
});
}
}
static inline void
@ -2113,7 +2140,7 @@ gsk_gl_renderer_add_render_ops (GskGLRenderer *self,
break;
case GSK_TEXTURE_NODE:
render_texture_node (self, node, builder, vertex_data);
render_texture_node (self, node, builder);
break;
case GSK_CAIRO_NODE: