gtk2/gsk/gl/gskglrenderops.c

702 lines
19 KiB
C

#include "gskglrenderopsprivate.h"
static inline gboolean
rect_equal (const graphene_rect_t *a,
const graphene_rect_t *b)
{
return memcmp (a, b, sizeof (graphene_rect_t)) == 0;
}
void
ops_finish (RenderOpBuilder *builder)
{
if (builder->mv_stack)
g_array_free (builder->mv_stack, TRUE);
if (builder->clip_stack)
g_array_free (builder->clip_stack, TRUE);
}
static inline void
rgba_to_float (const GdkRGBA *c,
float *f)
{
f[0] = c->red;
f[1] = c->green;
f[2] = c->blue;
f[3] = c->alpha;
}
/* Debugging only! */
void
ops_dump_framebuffer (RenderOpBuilder *builder,
const char *filename,
int width,
int height)
{
RenderOp op;
op.op = OP_DUMP_FRAMEBUFFER;
op.dump.filename = g_strdup (filename);
op.dump.width = width;
op.dump.height = height;
g_array_append_val (builder->render_ops, op);
}
float
ops_get_scale (const RenderOpBuilder *builder)
{
const MatrixStackEntry *head;
g_assert (builder->mv_stack != NULL);
g_assert (builder->mv_stack->len >= 1);
head = &g_array_index (builder->mv_stack, MatrixStackEntry, builder->mv_stack->len - 1);
/* TODO: Use two separate values */
return MAX (head->metadata.scale_x,
head->metadata.scale_y);
}
static void
extract_matrix_metadata (const graphene_matrix_t *m,
OpsMatrixMetadata *md)
{
graphene_vec3_t col1;
graphene_vec3_t col2;
/* Translate */
md->translate_x = graphene_matrix_get_value (m, 3, 0);
md->translate_y = graphene_matrix_get_value (m, 3, 1);
/* Scale */
graphene_vec3_init (&col1,
graphene_matrix_get_value (m, 0, 0),
graphene_matrix_get_value (m, 1, 0),
graphene_matrix_get_value (m, 2, 0));
graphene_vec3_init (&col2,
graphene_matrix_get_value (m, 0, 1),
graphene_matrix_get_value (m, 1, 1),
graphene_matrix_get_value (m, 2, 1));
md->scale_x = graphene_vec3_length (&col1);
md->scale_y = graphene_vec3_length (&col2);
/* A simple matrix (in our case) is one that doesn't do anything but scale
* and/or translate.
*
* For orher matrices, we fall back to offscreen drawing.
*/
md->simple = TRUE;
{
static const guchar check_zero[4][4] = {
{ 0, 1, 0, 1 }, /* If any of the values marked as '1' here is non-zero, */
{ 1, 0, 0, 1 }, /* We have to resort to offscreen drawing later on. */
{ 1, 1, 0, 1 },
{ 0, 0, 0, 0 },
};
int x, y;
for (x = 0; x < 4; x ++)
for (y = 0; y < 4; y ++)
if (check_zero[y][x] &&
graphene_matrix_get_value (m, y, x) != 0.0f)
{
md->simple = FALSE;
goto out;
}
}
out:
md->only_translation = (md->simple && md->scale_x == 1 && md->scale_y == 1);
}
void
ops_transform_bounds_modelview (const RenderOpBuilder *builder,
const graphene_rect_t *src,
graphene_rect_t *dst)
{
const float scale = ops_get_scale (builder);
const MatrixStackEntry *head;
g_assert (builder->mv_stack != NULL);
g_assert (builder->mv_stack->len >= 1);
head = &g_array_index (builder->mv_stack, MatrixStackEntry, builder->mv_stack->len - 1);
if (head->metadata.only_translation)
{
*dst = *src;
graphene_rect_offset (dst,
head->metadata.translate_x,
head->metadata.translate_y);
}
else
{
graphene_matrix_transform_bounds (builder->current_modelview,
src,
dst);
}
graphene_rect_offset (dst, builder->dx * scale, builder->dy * scale);
}
gboolean
ops_modelview_is_simple (const RenderOpBuilder *builder)
{
const MatrixStackEntry *head;
g_assert (builder->mv_stack != NULL);
g_assert (builder->mv_stack->len >= 1);
head = &g_array_index (builder->mv_stack, MatrixStackEntry, builder->mv_stack->len - 1);
return head->metadata.simple;
}
void
ops_set_program (RenderOpBuilder *builder,
const Program *program)
{
/* The tricky part about this is that we want to initialize all uniforms of a program
* to the current value from the builder, but only once. */
static const GskRoundedRect empty_clip;
static const graphene_matrix_t empty_matrix;
static const graphene_rect_t empty_rect;
RenderOp op;
ProgramState *program_state;
if (builder->current_program == program)
return;
op.op = OP_CHANGE_PROGRAM;
op.program = program;
g_array_append_val (builder->render_ops, op);
builder->current_program = program;
program_state = &builder->program_state[program->index];
/* If the projection is not yet set for this program, we use the current one. */
if (memcmp (&empty_matrix, &program_state->projection, sizeof (graphene_matrix_t)) == 0 ||
memcmp (&builder->current_projection, &program_state->projection, sizeof (graphene_matrix_t)) != 0)
{
op.op = OP_CHANGE_PROJECTION;
op.projection = builder->current_projection;
g_array_append_val (builder->render_ops, op);
program_state->projection = builder->current_projection;
}
if (memcmp (&empty_matrix, &program_state->modelview, sizeof (graphene_matrix_t)) == 0 ||
memcmp (builder->current_modelview, &program_state->modelview, sizeof (graphene_matrix_t)) != 0)
{
op.op = OP_CHANGE_MODELVIEW;
op.modelview = *builder->current_modelview;
g_array_append_val (builder->render_ops, op);
program_state->modelview = *builder->current_modelview;
}
if (rect_equal (&empty_rect, &program_state->viewport) ||
!rect_equal (&builder->current_viewport, &program_state->viewport))
{
op.op = OP_CHANGE_VIEWPORT;
op.viewport = builder->current_viewport;
g_array_append_val (builder->render_ops, op);
program_state->viewport = builder->current_viewport;
}
if (memcmp (&empty_clip, &program_state->clip, sizeof (GskRoundedRect)) == 0 ||
memcmp (&builder->current_clip, &program_state->clip, sizeof (GskRoundedRect)) != 0)
{
op.op = OP_CHANGE_CLIP;
op.clip = *builder->current_clip;
g_array_append_val (builder->render_ops, op);
program_state->clip = *builder->current_clip;
}
if (program_state->opacity != builder->current_opacity)
{
op.op = OP_CHANGE_OPACITY;
op.opacity = builder->current_opacity;
g_array_append_val (builder->render_ops, op);
program_state->opacity = builder->current_opacity;
}
builder->current_program_state = &builder->program_state[program->index];
}
static void
ops_set_clip (RenderOpBuilder *builder,
const GskRoundedRect *clip)
{
RenderOp *last_op;
if (builder->current_program_state &&
memcmp (&builder->current_program_state->clip, clip,sizeof (GskRoundedRect)) == 0)
return;
if (builder->render_ops->len > 0)
{
last_op = &g_array_index (builder->render_ops, RenderOp, builder->render_ops->len - 1);
if (last_op->op == OP_CHANGE_CLIP)
{
last_op->clip = *clip;
}
else
{
RenderOp op;
op.op = OP_CHANGE_CLIP;
op.clip = *clip;
g_array_append_val (builder->render_ops, op);
}
}
if (builder->current_program != NULL)
builder->current_program_state->clip = *clip;
}
void
ops_push_clip (RenderOpBuilder *self,
const GskRoundedRect *clip)
{
if (G_UNLIKELY (self->clip_stack == NULL))
self->clip_stack = g_array_new (FALSE, TRUE, sizeof (GskRoundedRect));
g_assert (self->clip_stack != NULL);
g_array_append_val (self->clip_stack, *clip);
self->current_clip = &g_array_index (self->clip_stack, GskRoundedRect, self->clip_stack->len - 1);
ops_set_clip (self, clip);
}
void
ops_pop_clip (RenderOpBuilder *self)
{
const GskRoundedRect *head;
g_assert (self->clip_stack);
g_assert (self->clip_stack->len >= 1);
self->clip_stack->len --;
head = &g_array_index (self->clip_stack, GskRoundedRect, self->clip_stack->len - 1);
if (self->clip_stack->len >= 1)
{
self->current_clip = head;
ops_set_clip (self, head);
}
else
{
self->current_clip = NULL;
}
}
gboolean
ops_has_clip (RenderOpBuilder *self)
{
return self->clip_stack != NULL &&
self->clip_stack->len > 1;
}
static void
ops_set_modelview (RenderOpBuilder *builder,
const graphene_matrix_t *modelview)
{
RenderOp op;
if (builder->current_program &&
memcmp (&builder->current_program_state->modelview, modelview,
sizeof (graphene_matrix_t)) == 0)
return;
if (builder->render_ops->len > 0)
{
RenderOp *last_op = &g_array_index (builder->render_ops, RenderOp, builder->render_ops->len - 1);
if (last_op->op == OP_CHANGE_MODELVIEW)
{
last_op->modelview = *modelview;
}
else
{
op.op = OP_CHANGE_MODELVIEW;
op.modelview = *modelview;
g_array_append_val (builder->render_ops, op);
}
}
else
{
op.op = OP_CHANGE_MODELVIEW;
op.modelview = *modelview;
g_array_append_val (builder->render_ops, op);
}
if (builder->current_program != NULL)
builder->current_program_state->modelview = *modelview;
}
void
ops_push_modelview (RenderOpBuilder *builder,
const graphene_matrix_t *mv)
{
MatrixStackEntry *entry;
if (G_UNLIKELY (builder->mv_stack == NULL))
builder->mv_stack = g_array_new (FALSE, TRUE, sizeof (MatrixStackEntry));
g_assert (builder->mv_stack != NULL);
g_array_set_size (builder->mv_stack, builder->mv_stack->len + 1);
entry = &g_array_index (builder->mv_stack, MatrixStackEntry, builder->mv_stack->len - 1);
entry->matrix = *mv;
extract_matrix_metadata (mv, &entry->metadata);
builder->current_modelview = &entry->matrix;
ops_set_modelview (builder, mv);
}
void
ops_pop_modelview (RenderOpBuilder *builder)
{
const graphene_matrix_t *m;
const MatrixStackEntry *head;
g_assert (builder->mv_stack);
g_assert (builder->mv_stack->len >= 1);
builder->mv_stack->len --;
head = &g_array_index (builder->mv_stack, MatrixStackEntry, builder->mv_stack->len - 1);
m = &head->matrix;
if (builder->mv_stack->len >= 1)
{
builder->current_modelview = m;
ops_set_modelview (builder, m);
}
else
{
builder->current_modelview = NULL;
}
}
graphene_matrix_t
ops_set_projection (RenderOpBuilder *builder,
const graphene_matrix_t *projection)
{
RenderOp op;
graphene_matrix_t prev_mv;
if (builder->render_ops->len > 0)
{
RenderOp *last_op = &g_array_index (builder->render_ops, RenderOp, builder->render_ops->len - 1);
if (last_op->op == OP_CHANGE_PROJECTION)
{
last_op->projection = *projection;
}
else
{
op.op = OP_CHANGE_PROJECTION;
op.projection = *projection;
g_array_append_val (builder->render_ops, op);
}
}
else
{
op.op = OP_CHANGE_PROJECTION;
op.projection = *projection;
g_array_append_val (builder->render_ops, op);
}
if (builder->current_program != NULL)
builder->current_program_state->projection = *projection;
prev_mv = builder->current_projection;
builder->current_projection = *projection;
return prev_mv;
}
graphene_rect_t
ops_set_viewport (RenderOpBuilder *builder,
const graphene_rect_t *viewport)
{
RenderOp op;
graphene_rect_t prev_viewport;
if (builder->current_program_state != NULL &&
rect_equal (&builder->current_program_state->viewport, viewport))
return builder->current_program_state->viewport;
op.op = OP_CHANGE_VIEWPORT;
op.viewport = *viewport;
g_array_append_val (builder->render_ops, op);
if (builder->current_program != NULL)
builder->current_program_state->viewport = *viewport;
prev_viewport = builder->current_viewport;
builder->current_viewport = *viewport;
return prev_viewport;
}
void
ops_set_texture (RenderOpBuilder *builder,
int texture_id)
{
RenderOp op;
if (builder->current_texture == texture_id)
return;
op.op = OP_CHANGE_SOURCE_TEXTURE;
op.texture_id = texture_id;
g_array_append_val (builder->render_ops, op);
builder->current_texture = texture_id;
}
int
ops_set_render_target (RenderOpBuilder *builder,
int render_target_id)
{
RenderOp op;
int prev_render_target;
if (builder->current_render_target == render_target_id)
return render_target_id;
prev_render_target = builder->current_render_target;
if (builder->render_ops->len > 0)
{
RenderOp *last_op = &g_array_index (builder->render_ops, RenderOp, builder->render_ops->len - 1);
if (last_op->op == OP_CHANGE_RENDER_TARGET)
{
last_op->render_target_id = render_target_id;
}
else
{
op.op = OP_CHANGE_RENDER_TARGET;
op.render_target_id = render_target_id;
g_array_append_val (builder->render_ops, op);
}
}
else
{
op.op = OP_CHANGE_RENDER_TARGET;
op.render_target_id = render_target_id;
g_array_append_val (builder->render_ops, op);
}
builder->current_render_target = render_target_id;
return prev_render_target;
}
float
ops_set_opacity (RenderOpBuilder *builder,
float opacity)
{
RenderOp op;
float prev_opacity;
RenderOp *last_op;
if (builder->current_opacity == opacity)
return opacity;
if (builder->render_ops->len > 0)
{
last_op = &g_array_index (builder->render_ops, RenderOp, builder->render_ops->len - 1);
if (last_op->op == OP_CHANGE_OPACITY)
{
last_op->opacity = opacity;
}
else
{
op.op = OP_CHANGE_OPACITY;
op.opacity = opacity;
g_array_append_val (builder->render_ops, op);
}
}
else
{
op.op = OP_CHANGE_OPACITY;
op.opacity = opacity;
g_array_append_val (builder->render_ops, op);
}
prev_opacity = builder->current_opacity;
builder->current_opacity = opacity;
if (builder->current_program != NULL)
builder->current_program_state->opacity = opacity;
return prev_opacity;
}
void
ops_set_color (RenderOpBuilder *builder,
const GdkRGBA *color)
{
RenderOp op;
if (gdk_rgba_equal (color, &builder->current_program_state->color))
return;
builder->current_program_state->color = *color;
op.op = OP_CHANGE_COLOR;
op.color = *color;
g_array_append_val (builder->render_ops, op);
}
void
ops_set_color_matrix (RenderOpBuilder *builder,
const graphene_matrix_t *matrix,
const graphene_vec4_t *offset)
{
RenderOp op;
if (memcmp (matrix,
&builder->current_program_state->color_matrix.matrix,
sizeof (graphene_matrix_t)) == 0 &&
memcmp (offset,
&builder->current_program_state->color_matrix.offset,
sizeof (graphene_vec4_t)) == 0)
return;
builder->current_program_state->color_matrix.matrix = *matrix;
builder->current_program_state->color_matrix.offset = *offset;
op.op = OP_CHANGE_COLOR_MATRIX;
op.color_matrix.matrix = *matrix;
op.color_matrix.offset = *offset;
g_array_append_val (builder->render_ops, op);
}
void
ops_set_border (RenderOpBuilder *builder,
const GskRoundedRect *outline)
{
RenderOp op;
if (memcmp (&builder->current_program_state->border.outline,
outline, sizeof (GskRoundedRect)) == 0)
return;
builder->current_program_state->border.outline = *outline;
op.op = OP_CHANGE_BORDER;
op.border.outline = *outline;
g_array_append_val (builder->render_ops, op);
}
void
ops_set_border_width (RenderOpBuilder *builder,
const float *widths)
{
RenderOp op;
if (memcmp (builder->current_program_state->border.widths,
widths, sizeof (float) * 4) == 0)
return;
memcpy (&builder->current_program_state->border.widths,
widths, sizeof (float) * 4);
op.op = OP_CHANGE_BORDER_WIDTH;
op.border.widths[0] = widths[0];
op.border.widths[1] = widths[1];
op.border.widths[2] = widths[2];
op.border.widths[3] = widths[3];
g_array_append_val (builder->render_ops, op);
}
void
ops_set_border_color (RenderOpBuilder *builder,
const GdkRGBA *color)
{
RenderOp op;
op.op = OP_CHANGE_BORDER_COLOR;
rgba_to_float (color, op.border.color);
if (memcmp (&op.border.color, &builder->current_program_state->border.color,
sizeof (float) * 4) == 0)
return;
rgba_to_float (color, builder->current_program_state->border.color);
g_array_append_val (builder->render_ops, op);
}
void
ops_draw (RenderOpBuilder *builder,
const GskQuadVertex vertex_data[GL_N_VERTICES])
{
RenderOp *last_op;
last_op = &g_array_index (builder->render_ops, RenderOp, builder->render_ops->len - 1);
/* If the previous op was a DRAW as well, we didn't change anything between the two calls,
* so these are just 2 subsequent draw calls. Same VAO, same program etc.
* And the offsets into the vao are in order as well, so make it one draw call. */
if (last_op->op == OP_DRAW)
{
/* We allow ourselves a little trick here. We still have to add a CHANGE_VAO op for
* this draw call so we can add our vertex data there, but we want it to be placed before
* the last draw call, so we reorder those. */
RenderOp new_draw;
new_draw.op = OP_DRAW;
new_draw.draw.vao_offset = last_op->draw.vao_offset;
new_draw.draw.vao_size = last_op->draw.vao_size + GL_N_VERTICES;
last_op->op = OP_CHANGE_VAO;
memcpy (&last_op->vertex_data, vertex_data, sizeof(GskQuadVertex) * GL_N_VERTICES);
/* Now add the DRAW */
g_array_append_val (builder->render_ops, new_draw);
}
else
{
const gsize n_ops = builder->render_ops->len;
RenderOp *op;
gsize offset = builder->buffer_size / sizeof (GskQuadVertex);
/* We will add two render ops here. */
g_array_set_size (builder->render_ops, n_ops + 2);
op = &g_array_index (builder->render_ops, RenderOp, n_ops);
op->op = OP_CHANGE_VAO;
memcpy (&op->vertex_data, vertex_data, sizeof(GskQuadVertex) * GL_N_VERTICES);
op = &g_array_index (builder->render_ops, RenderOp, n_ops + 1);
op->op = OP_DRAW;
op->draw.vao_offset = offset;
op->draw.vao_size = GL_N_VERTICES;
}
/* We added new vertex data in both cases so increase the buffer size */
builder->buffer_size += sizeof (GskQuadVertex) * GL_N_VERTICES;
}
void
ops_offset (RenderOpBuilder *builder,
float x,
float y)
{
builder->dx += x;
builder->dy += y;
}
void
ops_add (RenderOpBuilder *builder,
const RenderOp *op)
{
g_array_append_val (builder->render_ops, *op);
}