AuroraMiddleware/gtk
1
0
Fork 1
mirror of https://gitlab.gnome.org/GNOME/gtk.git synced 2024-12-26 13:41:07 +00:00
Code Issues Projects Releases Wiki Activity

gl renderer: Use op builder to render flipped texture

Browse Source 
Otherwise, we don't know about the uniform state
This commit is contained in:
Timm Bäder 2020-10-10 19:03:02 +02:00 committed by Matthias Clasen
parent da0abfce3a
commit 5f9fa13c65
1 changed files with 22 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

72
gsk/gl/gskglrenderer.c
View File

@ -4358,14 +4358,14 @@ gsk_gl_renderer_render_texture (GskRenderer *renderer,
glDeleteFramebuffers (1, &fbo_id);
/* Render the now drawn framebuffer y-flipped so it's as GdkGLTexture expects it to be */
{
guint final_texture_id, final_fbo_id;
GskQuadVertex vertex_data[6];
GLuint buffer_id, vao_id;
float fs[16];
graphene_matrix_t m;
ops_reset (&self->op_builder);
glGenFramebuffers (1, &final_fbo_id);
glBindFramebuffer (GL_FRAMEBUFFER, final_fbo_id);
glGenTextures (1, &final_texture_id);
@ -4384,60 +4384,32 @@ gsk_gl_renderer_render_texture (GskRenderer *renderer,
glFramebufferTexture (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, final_texture_id, 0);
g_assert_cmphex (glCheckFramebufferStatus (GL_FRAMEBUFFER), ==, GL_FRAMEBUFFER_COMPLETE);
glGenVertexArrays (1, &vao_id);
glBindVertexArray (vao_id);
glGenBuffers (1, &buffer_id);
glBindBuffer (GL_ARRAY_BUFFER, buffer_id);
fill_vertex_data (vertex_data, 0, 0, width, height);
glBufferData (GL_ARRAY_BUFFER, sizeof (vertex_data), vertex_data, GL_STATIC_DRAW);
/* 0 = position location */
glEnableVertexAttribArray (0);
glVertexAttribPointer (0, 2, GL_FLOAT, GL_FALSE,
sizeof (GskQuadVertex),
(void *) G_STRUCT_OFFSET (GskQuadVertex, position));
/* 1 = texture coord location */
glEnableVertexAttribArray (1);
glVertexAttribPointer (1, 2, GL_FLOAT, GL_FALSE,
sizeof (GskQuadVertex),
(void *) G_STRUCT_OFFSET (GskQuadVertex, uv));
glUseProgram (self->programs->blit_program.id);
glClearColor (0, 0, 0, 0);
glClear (GL_COLOR_BUFFER_BIT);
glActiveTexture (GL_TEXTURE0);
glBindTexture (GL_TEXTURE_2D, texture_id);
glUniform1i (self->programs->blit_program.source_location, 0);
graphene_matrix_init_identity (&m);
graphene_matrix_to_float (&m, fs);
glUniformMatrix4fv (self->programs->blit_program.modelview_location, 1, GL_FALSE, fs);
ops_set_render_target (&self->op_builder, final_fbo_id);
ops_push_clip (&self->op_builder, &GSK_ROUNDED_RECT_INIT (0, 0, width, height));
ops_set_program (&self->op_builder, &self->programs->blit_program);
ops_begin (&self->op_builder, OP_CLEAR);
ops_set_texture (&self->op_builder, texture_id);
ops_set_modelview (&self->op_builder, NULL);
ops_set_viewport (&self->op_builder, &GRAPHENE_RECT_INIT (0, 0, width, height));
init_projection_matrix (&m, &GRAPHENE_RECT_INIT (0, 0, width, height));
graphene_matrix_scale (&m, 1, -1, 1); /* Undo the scale init_projection_matrix() does again */
graphene_matrix_to_float (&m, fs);
glUniformMatrix4fv (self->programs->blit_program.projection_location, 1, GL_FALSE, fs);
ops_set_projection (&self->op_builder, &m);
glUniform4f (self->programs->blit_program.viewport_location, 0, 0, width, height);
glViewport (0, 0, width, height);
ops_draw (&self->op_builder, (GskQuadVertex[GL_N_VERTICES]) {
{ { 0, 0 }, { 0, 1 }, },
{ { 0, height }, { 0, 0 }, },
{ { width, 0 }, { 1, 1 }, },
glUniform4fv (self->programs->blit_program.clip_rect_location, 3,
(float *)&GSK_ROUNDED_RECT_INIT (0, 0, width, height));
glUniform1f (self->programs->blit_program.alpha_location, 1.0f);
{ { width, height }, { 1, 0 }, },
{ { 0, height }, { 0, 0 }, },
{ { width, 0 }, { 1, 1 }, },
});
glDrawArrays (GL_TRIANGLES, 0, 6);
glDeleteFramebuffers (1, &final_fbo_id);
glDeleteVertexArrays (1, &vao_id);
glDeleteBuffers (1, &buffer_id);
glDeleteTextures (1, &texture_id);
ops_pop_clip (&self->op_builder);
gsk_gl_renderer_render_ops (self);
ops_finish (&self->op_builder);
texture_id = final_texture_id;
}