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gtk/gsk/gl/gskgluniformstateprivate.h
Matthias Clasen 144f727d5a Rename ngl to gl 
We have only one gl renderer now, and it is
a bit odd for it not be called gl.
2021-10-07 13:05:53 -04:00

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/* gskgluniformstateprivate.h
*
* Copyright 2020 Christian Hergert <chergert@redhat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#ifndef GSK_GL_UNIFORM_STATE_PRIVATE_H
#define GSK_GL_UNIFORM_STATE_PRIVATE_H
#include "gskgltypesprivate.h"
G_BEGIN_DECLS
typedef struct { float v0; } Uniform1f;
typedef struct { float v0; float v1; } Uniform2f;
typedef struct { float v0; float v1; float v2; } Uniform3f;
typedef struct { float v0; float v1; float v2; float v3; } Uniform4f;
typedef struct { int v0; } Uniform1i;
typedef struct { int v0; int v1; } Uniform2i;
typedef struct { int v0; int v1; int v2; } Uniform3i;
typedef struct { int v0; int v1; int v2; int v3; } Uniform4i;
typedef struct { guint v0; } Uniform1ui;
#define GSK_GL_UNIFORM_ARRAY_BITS 5
#define GSK_GL_UNIFORM_FORMAT_BITS 5
#define GSK_GL_UNIFORM_OFFSET_BITS 21
typedef struct _GskGLUniformInfo
{
guint initial : 1;
guint format : GSK_GL_UNIFORM_FORMAT_BITS;
guint array_count : GSK_GL_UNIFORM_ARRAY_BITS;
guint offset : GSK_GL_UNIFORM_OFFSET_BITS;
} GskGLUniformInfo;
G_STATIC_ASSERT (sizeof (GskGLUniformInfo) == 4);
typedef struct _GskGLUniformMapping
{
const char *name;
GskGLUniformInfo info;
guint stamp;
int location;
} GskGLUniformMapping;
typedef struct _GskGLUniformProgram
{
guint program_id;
guint n_uniforms : 12;
guint has_attachments : 1;
guint n_mappings;
GskGLUniformMapping mappings[32];
} GskGLUniformProgram;
typedef struct _GskGLUniformState
{
GHashTable *programs;
guint8 *values_buf;
guint values_pos;
guint values_len;
GskGLUniformInfo apply_hash[512];
} GskGLUniformState;
typedef enum _GskGLUniformKind
{
GSK_GL_UNIFORM_FORMAT_1F = 1,
GSK_GL_UNIFORM_FORMAT_2F,
GSK_GL_UNIFORM_FORMAT_3F,
GSK_GL_UNIFORM_FORMAT_4F,
GSK_GL_UNIFORM_FORMAT_1FV,
GSK_GL_UNIFORM_FORMAT_2FV,
GSK_GL_UNIFORM_FORMAT_3FV,
GSK_GL_UNIFORM_FORMAT_4FV,
GSK_GL_UNIFORM_FORMAT_1I,
GSK_GL_UNIFORM_FORMAT_2I,
GSK_GL_UNIFORM_FORMAT_3I,
GSK_GL_UNIFORM_FORMAT_4I,
GSK_GL_UNIFORM_FORMAT_1UI,
GSK_GL_UNIFORM_FORMAT_TEXTURE,
GSK_GL_UNIFORM_FORMAT_MATRIX,
GSK_GL_UNIFORM_FORMAT_ROUNDED_RECT,
GSK_GL_UNIFORM_FORMAT_COLOR,
GSK_GL_UNIFORM_FORMAT_LAST
} GskGLUniformFormat;
G_STATIC_ASSERT (GSK_GL_UNIFORM_FORMAT_LAST < (1 << GSK_GL_UNIFORM_FORMAT_BITS));
GskGLUniformState *gsk_gl_uniform_state_new (void);
GskGLUniformState *gsk_gl_uniform_state_ref (GskGLUniformState *state);
void gsk_gl_uniform_state_unref (GskGLUniformState *state);
GskGLUniformProgram *gsk_gl_uniform_state_get_program (GskGLUniformState *state,
guint program,
const GskGLUniformMapping *mappings,
guint n_mappings);
void gsk_gl_uniform_state_end_frame (GskGLUniformState *state);
gsize gsk_gl_uniform_format_size (GskGLUniformFormat format);
gpointer gsk_gl_uniform_state_init_value (GskGLUniformState *state,
GskGLUniformProgram *program,
GskGLUniformFormat format,
guint array_count,
guint key,
GskGLUniformMapping **out_mapping);
#define GSK_GL_UNIFORM_VALUE(base, offset) ((gpointer)((base) + ((offset) * 4)))
#define gsk_gl_uniform_state_get_uniform_data(state,offset) GSK_GL_UNIFORM_VALUE((state)->values_buf, offset)
static inline gpointer
gsk_gl_uniform_state_get_value (GskGLUniformState *state,
GskGLUniformProgram *program,
GskGLUniformFormat format,
guint array_count,
guint key,
guint stamp,
GskGLUniformMapping **out_mapping)
{
GskGLUniformMapping *mapping;
g_assert (key < G_N_ELEMENTS (program->mappings));
g_assert (key < program->n_mappings);
mapping = &program->mappings[key];
/* Short-circuit if the program optimized the uniform out */
if (mapping->location == -1)
return NULL;
/* If the stamp is the same, then we can ignore the request
* and short-circuit as early as possible. This requires the
* caller to increment their private stamp when they change
* internal state.
*
* This is generally used for the shared uniforms like projection,
* modelview, clip, etc to avoid so many comparisons which cost
* considerable CPU.
*/
if (stamp != 0 && stamp == mapping->stamp)
return NULL;
if G_LIKELY (format == mapping->info.format && array_count <= mapping->info.array_count)
{
*out_mapping = mapping;
return GSK_GL_UNIFORM_VALUE (state->values_buf, mapping->info.offset);
}
return gsk_gl_uniform_state_init_value (state, program, format, array_count, key, out_mapping);
}
G_GNUC_PURE static inline guint
gsk_gl_uniform_state_align (guint current_pos,
guint size)
{
guint align = size > 8 ? 16 : (size > 4 ? 8 : 4);
guint masked = current_pos & (align - 1);
g_assert (size > 0);
g_assert (align == 4 || align == 8 || align == 16);
g_assert (masked < align);
return align - masked;
}
static inline gpointer
gsk_gl_uniform_state_realloc (GskGLUniformState *state,
guint size,
guint *offset)
{
guint padding = gsk_gl_uniform_state_align (state->values_pos, size);
if G_UNLIKELY (state->values_len - padding - size < state->values_pos)
{
state->values_len *= 2;
state->values_buf = g_realloc (state->values_buf, state->values_len);
}
/* offsets are in slots of 4 to use fewer bits */
g_assert ((state->values_pos + padding) % 4 == 0);
*offset = (state->values_pos + padding) / 4;
state->values_pos += padding + size;
return GSK_GL_UNIFORM_VALUE (state->values_buf, *offset);
}
#define GSK_GL_UNIFORM_STATE_REPLACE(info, u, type, count) \
G_STMT_START { \
if ((info)->info.initial && count == (info)->info.array_count) \
{ \
u = GSK_GL_UNIFORM_VALUE (state->values_buf, (info)->info.offset); \
} \
else \
{ \
guint offset; \
u = gsk_gl_uniform_state_realloc (state, sizeof(type) * MAX (1, count), &offset); \
g_assert (offset < (1 << GSK_GL_UNIFORM_OFFSET_BITS)); \
(info)->info.offset = offset; \
/* We might have increased array length */ \
(info)->info.array_count = count; \
} \
} G_STMT_END
static inline void
gsk_gl_uniform_info_changed (GskGLUniformMapping *info,
guint stamp)
{
info->stamp = stamp;
info->info.initial = FALSE;
}
static inline void
gsk_gl_uniform_state_set1f (GskGLUniformState *state,
GskGLUniformProgram *program,
guint key,
guint stamp,
float value0)
{
Uniform1f *u;
GskGLUniformMapping *info;
g_assert (state != NULL);
g_assert (program != 0);
if ((u = gsk_gl_uniform_state_get_value (state, program, GSK_GL_UNIFORM_FORMAT_1F, 1, key, stamp, &info)))
{
if (info->info.initial || u->v0 != value0)
{
GSK_GL_UNIFORM_STATE_REPLACE (info, u, Uniform1f , 1);
u->v0 = value0;
gsk_gl_uniform_info_changed (info, stamp);
}
}
}
static inline void
gsk_gl_uniform_state_set2f (GskGLUniformState *state,
GskGLUniformProgram *program,
guint key,
guint stamp,
float value0,
float value1)
{
Uniform2f *u;
GskGLUniformMapping *info;
g_assert (state != NULL);
g_assert (program != NULL);
if ((u = gsk_gl_uniform_state_get_value (state, program, GSK_GL_UNIFORM_FORMAT_2F, 1, key, stamp, &info)))
{
if (info->info.initial || u->v0 != value0 || u->v1 != value1)
{
GSK_GL_UNIFORM_STATE_REPLACE (info, u, Uniform2f, 1);
u->v0 = value0;
u->v1 = value1;
gsk_gl_uniform_info_changed (info, stamp);
}
}
}
static inline void
gsk_gl_uniform_state_set3f (GskGLUniformState *state,
GskGLUniformProgram *program,
guint key,
guint stamp,
float value0,
float value1,
float value2)
{
Uniform3f *u;
GskGLUniformMapping *info;
g_assert (state != NULL);
g_assert (program != NULL);
if ((u = gsk_gl_uniform_state_get_value (state, program, GSK_GL_UNIFORM_FORMAT_3F, 1, key, stamp, &info)))
{
if (info->info.initial || u->v0 != value0 || u->v1 != value1 || u->v2 != value2)
{
GSK_GL_UNIFORM_STATE_REPLACE (info, u, Uniform3f, 1);
u->v0 = value0;
u->v1 = value1;
u->v2 = value2;
gsk_gl_uniform_info_changed (info, stamp);
}
}
}
static inline void
gsk_gl_uniform_state_set4f (GskGLUniformState *state,
GskGLUniformProgram *program,
guint key,
guint stamp,
float value0,
float value1,
float value2,
float value3)
{
Uniform4f *u;
GskGLUniformMapping *info;
g_assert (state != NULL);
g_assert (program != NULL);
if ((u = gsk_gl_uniform_state_get_value (state, program, GSK_GL_UNIFORM_FORMAT_4F, 1, key, stamp, &info)))
{
if (info->info.initial || u->v0 != value0 || u->v1 != value1 || u->v2 != value2 || u->v3 != value3)
{
GSK_GL_UNIFORM_STATE_REPLACE (info, u, Uniform4f, 1);
u->v0 = value0;
u->v1 = value1;
u->v2 = value2;
u->v3 = value3;
gsk_gl_uniform_info_changed (info, stamp);
}
}
}
static inline void
gsk_gl_uniform_state_set1ui (GskGLUniformState *state,
GskGLUniformProgram *program,
guint key,
guint stamp,
guint value0)
{
Uniform1ui *u;
GskGLUniformMapping *info;
g_assert (state != NULL);
g_assert (program != NULL);
if ((u = gsk_gl_uniform_state_get_value (state, program, GSK_GL_UNIFORM_FORMAT_1UI, 1, key, stamp, &info)))
{
if (info->info.initial || u->v0 != value0)
{
GSK_GL_UNIFORM_STATE_REPLACE (info, u, Uniform1ui, 1);
u->v0 = value0;
gsk_gl_uniform_info_changed (info, stamp);
}
}
}
static inline void
gsk_gl_uniform_state_set1i (GskGLUniformState *state,
GskGLUniformProgram *program,
guint key,
guint stamp,
int value0)
{
Uniform1i *u;
GskGLUniformMapping *info;
g_assert (state != NULL);
g_assert (program != NULL);
if ((u = gsk_gl_uniform_state_get_value (state, program, GSK_GL_UNIFORM_FORMAT_1I, 1, key, stamp, &info)))
{
if (info->info.initial || u->v0 != value0)
{
GSK_GL_UNIFORM_STATE_REPLACE (info, u, Uniform1i, 1);
u->v0 = value0;
gsk_gl_uniform_info_changed (info, stamp);
}
}
}
static inline void
gsk_gl_uniform_state_set2i (GskGLUniformState *state,
GskGLUniformProgram *program,
guint key,
guint stamp,
int value0,
int value1)
{
Uniform2i *u;
GskGLUniformMapping *info;
g_assert (state != NULL);
g_assert (program != NULL);
if ((u = gsk_gl_uniform_state_get_value (state, program, GSK_GL_UNIFORM_FORMAT_2I, 1, key, stamp, &info)))
{
if (info->info.initial || u->v0 != value0 || u->v1 != value1)
{
GSK_GL_UNIFORM_STATE_REPLACE (info, u, Uniform2i, 1);
u->v0 = value0;
u->v1 = value1;
gsk_gl_uniform_info_changed (info, stamp);
}
}
}
static inline void
gsk_gl_uniform_state_set3i (GskGLUniformState *state,
GskGLUniformProgram *program,
guint key,
guint stamp,
int value0,
int value1,
int value2)
{
Uniform3i *u;
GskGLUniformMapping *info;
g_assert (state != NULL);
g_assert (program != NULL);
if ((u = gsk_gl_uniform_state_get_value (state, program, GSK_GL_UNIFORM_FORMAT_3I, 1, key, stamp, &info)))
{
if (info->info.initial || u->v0 != value0 || u->v1 != value1 || u->v2 != value2)
{
GSK_GL_UNIFORM_STATE_REPLACE (info, u, Uniform3i, 1);
u->v0 = value0;
u->v1 = value1;
u->v2 = value2;
gsk_gl_uniform_info_changed (info, stamp);
}
}
}
static inline void
gsk_gl_uniform_state_set4i (GskGLUniformState *state,
GskGLUniformProgram *program,
guint key,
guint stamp,
int value0,
int value1,
int value2,
int value3)
{
Uniform4i *u;
GskGLUniformMapping *info;
g_assert (state != NULL);
g_assert (program != NULL);
if ((u = gsk_gl_uniform_state_get_value (state, program, GSK_GL_UNIFORM_FORMAT_4I, 1, key, stamp, &info)))
{
if (info->info.initial || u->v0 != value0 || u->v1 != value1 || u->v2 != value2 || u->v3 != value3)
{
GSK_GL_UNIFORM_STATE_REPLACE (info, u, Uniform4i, 1);
u->v0 = value0;
u->v1 = value1;
u->v2 = value2;
u->v3 = value3;
gsk_gl_uniform_info_changed (info, stamp);
}
}
}
static inline void
gsk_gl_uniform_state_set_rounded_rect (GskGLUniformState *state,
GskGLUniformProgram *program,
guint key,
guint stamp,
const GskRoundedRect *rounded_rect)
{
GskRoundedRect *u;
GskGLUniformMapping *info;
g_assert (state != NULL);
g_assert (program != NULL);
g_assert (rounded_rect != NULL);
if ((u = gsk_gl_uniform_state_get_value (state, program, GSK_GL_UNIFORM_FORMAT_ROUNDED_RECT, 1, key, stamp, &info)))
{
if (info->info.initial || memcmp (u, rounded_rect, sizeof *u) != 0)
{
GSK_GL_UNIFORM_STATE_REPLACE (info, u, GskRoundedRect, 1);
memcpy (u, rounded_rect, sizeof *rounded_rect);
gsk_gl_uniform_info_changed (info, stamp);
}
}
}
static inline void
gsk_gl_uniform_state_set_matrix (GskGLUniformState *state,
GskGLUniformProgram *program,
guint key,
guint stamp,
const graphene_matrix_t *matrix)
{
graphene_matrix_t *u;
GskGLUniformMapping *info;
g_assert (state != NULL);
g_assert (program != NULL);
g_assert (matrix != NULL);
if ((u = gsk_gl_uniform_state_get_value (state, program, GSK_GL_UNIFORM_FORMAT_MATRIX, 1, key, stamp, &info)))
{
if (info->info.initial || memcmp (u, matrix, sizeof *u) != 0)
{
GSK_GL_UNIFORM_STATE_REPLACE (info, u, graphene_matrix_t, 1);
memcpy (u, matrix, sizeof *matrix);
gsk_gl_uniform_info_changed (info, stamp);
}
}
}
/**
* gsk_gl_uniform_state_set_texture:
* @state: a `GskGLUniformState`
* @program: the program id
* @location: the location of the texture
* @texture_slot: a texturing slot such as GL_TEXTURE0
*
* Sets the uniform expecting a texture to @texture_slot. This API
* expects a texture slot such as GL_TEXTURE0 to reduce chances of
* miss-use by the caller.
*
* The value stored to the uniform is in the form of 0 for GL_TEXTURE0,
* 1 for GL_TEXTURE1, and so on.
*/
static inline void
gsk_gl_uniform_state_set_texture (GskGLUniformState *state,
GskGLUniformProgram *program,
guint key,
guint stamp,
guint texture_slot)
{
GskGLUniformMapping *info;
guint *u;
g_assert (texture_slot >= GL_TEXTURE0);
g_assert (texture_slot < GL_TEXTURE16);
texture_slot -= GL_TEXTURE0;
if ((u = gsk_gl_uniform_state_get_value (state, program, GSK_GL_UNIFORM_FORMAT_TEXTURE, 1, key, stamp, &info)))
{
if (info->info.initial || *u != texture_slot)
{
GSK_GL_UNIFORM_STATE_REPLACE (info, u, guint, 1);
*u = texture_slot;
gsk_gl_uniform_info_changed (info, stamp);
}
}
}
/**
* gsk_gl_uniform_state_set_color:
* @state: a `GskGLUniformState`
* @program: a program id > 0
* @location: the uniform location
* @color: a color to set or %NULL for transparent
*
* Sets a uniform to the color described by @color. This is a convenience
* function to allow callers to avoid having to translate colors to floats
* in other portions of the renderer.
*/
static inline void
gsk_gl_uniform_state_set_color (GskGLUniformState *state,
GskGLUniformProgram *program,
guint key,
guint stamp,
const GdkRGBA *color)
{
static const GdkRGBA transparent = {0};
GskGLUniformMapping *info;
GdkRGBA *u;
g_assert (state != NULL);
g_assert (program != NULL);
if ((u = gsk_gl_uniform_state_get_value (state, program, GSK_GL_UNIFORM_FORMAT_COLOR, 1, key, stamp, &info)))
{
if (color == NULL)
color = &transparent;
if (info->info.initial || memcmp (color, u, sizeof *u) != 0)
{
GSK_GL_UNIFORM_STATE_REPLACE (info, u, GdkRGBA, 1);
memcpy (u, color, sizeof *color);
gsk_gl_uniform_info_changed (info, stamp);
}
}
}
static inline void
gsk_gl_uniform_state_set1fv (GskGLUniformState *state,
GskGLUniformProgram *program,
guint key,
guint stamp,
guint count,
const float *value)
{
Uniform1f *u;
GskGLUniformMapping *info;
g_assert (state != NULL);
g_assert (program != NULL);
g_assert (count > 0);
if ((u = gsk_gl_uniform_state_get_value (state, program, GSK_GL_UNIFORM_FORMAT_1FV, count, key, stamp, &info)))
{
if (info->info.initial || count != info->info.array_count || memcmp (u, value, sizeof *u * count) != 0)
{
GSK_GL_UNIFORM_STATE_REPLACE (info, u, Uniform1f, count);
memcpy (u, value, sizeof (Uniform1f) * count);
gsk_gl_uniform_info_changed (info, stamp);
}
}
}
static inline void
gsk_gl_uniform_state_set2fv (GskGLUniformState *state,
GskGLUniformProgram *program,
guint key,
guint stamp,
guint count,
const float *value)
{
Uniform2f *u;
GskGLUniformMapping *info;
g_assert (state != NULL);
g_assert (program != NULL);
g_assert (count > 0);
if ((u = gsk_gl_uniform_state_get_value (state, program, GSK_GL_UNIFORM_FORMAT_2FV, count, key, stamp, &info)))
{
if (info->info.initial || count != info->info.array_count || memcmp (u, value, sizeof *u * count) != 0)
{
GSK_GL_UNIFORM_STATE_REPLACE (info, u, Uniform2f, count);
memcpy (u, value, sizeof (Uniform2f) * count);
gsk_gl_uniform_info_changed (info, stamp);
}
}
}
static inline void
gsk_gl_uniform_state_set3fv (GskGLUniformState *state,
GskGLUniformProgram *program,
guint key,
guint stamp,
guint count,
const float *value)
{
Uniform3f *u;
GskGLUniformMapping *info;
g_assert (state != NULL);
g_assert (program != NULL);
g_assert (count > 0);
if ((u = gsk_gl_uniform_state_get_value (state, program, GSK_GL_UNIFORM_FORMAT_3FV, count, key, stamp, &info)))
{
if (info->info.initial || count != info->info.array_count || memcmp (u, value, sizeof *u * count) != 0)
{
GSK_GL_UNIFORM_STATE_REPLACE (info, u, Uniform3f, count);
memcpy (u, value, sizeof (Uniform3f) * count);
gsk_gl_uniform_info_changed (info, stamp);
}
}
}
static inline void
gsk_gl_uniform_state_set4fv (GskGLUniformState *state,
GskGLUniformProgram *program,
guint key,
guint stamp,
guint count,
const float *value)
{
Uniform4f *u;
GskGLUniformMapping *info;
g_assert (state != NULL);
g_assert (program != NULL);
g_assert (count > 0);
if ((u = gsk_gl_uniform_state_get_value (state, program, GSK_GL_UNIFORM_FORMAT_4FV, count, key, stamp, &info)))
{
if (info->info.initial || count != info->info.array_count || memcmp (u, value, sizeof *u * count) != 0)
{
GSK_GL_UNIFORM_STATE_REPLACE (info, u, Uniform4f, count);
memcpy (u, value, sizeof (Uniform4f) * count);
gsk_gl_uniform_info_changed (info, stamp);
}
}
}
static inline guint
gsk_gl_uniform_state_fmix (guint program,
guint location)
{
guint h = (program << 16) | location;
h ^= h >> 16;
h *= 0x85ebca6b;
h ^= h >> 13;
h *= 0xc2b2ae35;
h ^= h >> 16;
return h;
}
/*
* gsk_gl_uniform_state_apply:
* @state: the uniform state
* @program: the program id
* @location: the location of the uniform
* @offset: the offset of the data within the buffer
* @info: the uniform info
*
* This function can be used to apply state that was previously recorded
* by the `GskGLUniformState`.
*
* It is specifically useful from the `GskGLCommandQueue` to execute uniform
* changes but only when they have changed from the current value.
*/
static inline void
gsk_gl_uniform_state_apply (GskGLUniformState *state,
guint program,
guint location,
GskGLUniformInfo info)
{
guint index = gsk_gl_uniform_state_fmix (program, location) % G_N_ELEMENTS (state->apply_hash);
gconstpointer dataptr = GSK_GL_UNIFORM_VALUE (state->values_buf, info.offset);
/* aligned, can treat as unsigned */
if (*(guint *)&info == *(guint *)&state->apply_hash[index])
return;
state->apply_hash[index] = info;
/* TODO: We could do additional comparisons here to make sure we are
* changing state.
*/
switch (info.format)
{
case GSK_GL_UNIFORM_FORMAT_1F:
glUniform1fv (location, 1, dataptr);
break;
case GSK_GL_UNIFORM_FORMAT_2F:
glUniform2fv (location, 1, dataptr);
break;
case GSK_GL_UNIFORM_FORMAT_3F:
glUniform3fv (location, 1, dataptr);
break;
case GSK_GL_UNIFORM_FORMAT_4F:
glUniform4fv (location, 1, dataptr);
break;
case GSK_GL_UNIFORM_FORMAT_1FV:
glUniform1fv (location, info.array_count, dataptr);
break;
case GSK_GL_UNIFORM_FORMAT_2FV:
glUniform2fv (location, info.array_count, dataptr);
break;
case GSK_GL_UNIFORM_FORMAT_3FV:
glUniform3fv (location, info.array_count, dataptr);
break;
case GSK_GL_UNIFORM_FORMAT_4FV:
glUniform4fv (location, info.array_count, dataptr);
break;
case GSK_GL_UNIFORM_FORMAT_1I:
case GSK_GL_UNIFORM_FORMAT_TEXTURE:
glUniform1iv (location, 1, dataptr);
break;
case GSK_GL_UNIFORM_FORMAT_2I:
glUniform2iv (location, 1, dataptr);
break;
case GSK_GL_UNIFORM_FORMAT_3I:
glUniform3iv (location, 1, dataptr);
break;
case GSK_GL_UNIFORM_FORMAT_4I:
glUniform4iv (location, 1, dataptr);
break;
case GSK_GL_UNIFORM_FORMAT_1UI:
glUniform1uiv (location, 1, dataptr);
break;
case GSK_GL_UNIFORM_FORMAT_MATRIX: {
float mat[16];
graphene_matrix_to_float (dataptr, mat);
glUniformMatrix4fv (location, 1, GL_FALSE, mat);
#if 0
/* TODO: If Graphene can give us a peek here on platforms
* where the format is float[16] (most/all x86_64?) then
* We can avoid the SIMD operation to convert the format.
*/
G_STATIC_ASSERT (sizeof (graphene_matrix_t) == 16*4);
glUniformMatrix4fv (location, 1, GL_FALSE, dataptr);
#endif
}
break;
case GSK_GL_UNIFORM_FORMAT_COLOR:
glUniform4fv (location, 1, dataptr);
break;
case GSK_GL_UNIFORM_FORMAT_ROUNDED_RECT:
glUniform4fv (location, 3, dataptr);
break;
default:
g_assert_not_reached ();
}
}
G_END_DECLS
#endif /* GSK_GL_UNIFORM_STATE_PRIVATE_H */
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