#include <string.h>
#include <assert.h>
-#include <GL/glew.h>
+#include <epoxy/gl.h>
#include "effect_util.h"
#include "flat_input.h"
#include "resource_pool.h"
#include "util.h"
-FlatInput::FlatInput(ImageFormat image_format, MovitPixelFormat pixel_format, GLenum type, unsigned width, unsigned height)
+using namespace std;
+
+namespace movit {
+
+FlatInput::FlatInput(ImageFormat image_format, MovitPixelFormat pixel_format_in, GLenum type, unsigned width, unsigned height)
: image_format(image_format),
- pixel_format(pixel_format),
type(type),
pbo(0),
texture_num(0),
- needs_update(false),
- finalized(false),
output_linear_gamma(false),
needs_mipmaps(false),
width(width),
height(height),
pitch(width),
- pixel_data(NULL)
+ pixel_data(NULL),
+ fixup_swap_rb(false),
+ fixup_red_to_grayscale(false)
{
- assert(type == GL_FLOAT || type == GL_UNSIGNED_BYTE);
+ assert(type == GL_FLOAT || type == GL_HALF_FLOAT || type == GL_UNSIGNED_SHORT || type == GL_UNSIGNED_BYTE);
register_int("output_linear_gamma", &output_linear_gamma);
register_int("needs_mipmaps", &needs_mipmaps);
+
+ // Some types are not supported in all GL versions (e.g. GLES),
+ // and will corrected into the right format in the shader.
+ switch (pixel_format_in) {
+ case FORMAT_BGRA_PREMULTIPLIED_ALPHA:
+ pixel_format = FORMAT_RGBA_PREMULTIPLIED_ALPHA;
+ fixup_swap_rb = true;
+ break;
+ case FORMAT_BGRA_POSTMULTIPLIED_ALPHA:
+ pixel_format = FORMAT_RGBA_POSTMULTIPLIED_ALPHA;
+ fixup_swap_rb = true;
+ break;
+ case FORMAT_BGR:
+ pixel_format = FORMAT_RGB;
+ fixup_swap_rb = true;
+ break;
+ case FORMAT_GRAYSCALE:
+ pixel_format = FORMAT_R;
+ fixup_red_to_grayscale = true;
+ break;
+ default:
+ pixel_format = pixel_format_in;
+ break;
+ }
}
FlatInput::~FlatInput()
}
}
-void FlatInput::finalize()
-{
- // Translate the input format to OpenGL's enums.
- GLenum internal_format;
- if (type == GL_FLOAT) {
- internal_format = GL_RGBA32F_ARB;
- } else if (output_linear_gamma) {
- assert(type == GL_UNSIGNED_BYTE);
- internal_format = GL_SRGB8_ALPHA8;
- } else {
- assert(type == GL_UNSIGNED_BYTE);
- internal_format = GL_RGBA8;
- }
- if (pixel_format == FORMAT_RGB) {
- format = GL_RGB;
- } else if (pixel_format == FORMAT_RGBA_PREMULTIPLIED_ALPHA ||
- pixel_format == FORMAT_RGBA_POSTMULTIPLIED_ALPHA) {
- format = GL_RGBA;
- } else if (pixel_format == FORMAT_BGR) {
- format = GL_BGR;
- } else if (pixel_format == FORMAT_BGRA_PREMULTIPLIED_ALPHA ||
- pixel_format == FORMAT_BGRA_POSTMULTIPLIED_ALPHA) {
- format = GL_BGRA;
- } else if (pixel_format == FORMAT_GRAYSCALE) {
- format = GL_LUMINANCE;
- } else {
- assert(false);
- }
-
- // Create the texture itself.
- texture_num = resource_pool->create_2d_texture(internal_format, width, height);
- glBindTexture(GL_TEXTURE_2D, texture_num);
- check_error();
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, needs_mipmaps ? GL_LINEAR_MIPMAP_NEAREST : GL_LINEAR);
- check_error();
- glBindTexture(GL_TEXTURE_2D, 0);
- check_error();
-
- needs_update = true;
- finalized = true;
-}
-
-void FlatInput::set_gl_state(GLuint glsl_program_num, const std::string& prefix, unsigned *sampler_num)
+void FlatInput::set_gl_state(GLuint glsl_program_num, const string& prefix, unsigned *sampler_num)
{
glActiveTexture(GL_TEXTURE0 + *sampler_num);
check_error();
- glBindTexture(GL_TEXTURE_2D, texture_num);
- check_error();
- glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
- check_error();
- if (needs_update) {
- // Re-upload the texture.
+ if (texture_num == 0) {
+ // Translate the input format to OpenGL's enums.
+ GLint internal_format;
+ GLenum format;
+ if (type == GL_FLOAT) {
+ if (pixel_format == FORMAT_R) {
+ internal_format = GL_R32F;
+ } else if (pixel_format == FORMAT_RG) {
+ internal_format = GL_RG32F;
+ } else if (pixel_format == FORMAT_RGB) {
+ internal_format = GL_RGB32F;
+ } else {
+ internal_format = GL_RGBA32F;
+ }
+ } else if (type == GL_HALF_FLOAT) {
+ if (pixel_format == FORMAT_R) {
+ internal_format = GL_R16F;
+ } else if (pixel_format == FORMAT_RG) {
+ internal_format = GL_RG16F;
+ } else if (pixel_format == FORMAT_RGB) {
+ internal_format = GL_RGB16F;
+ } else {
+ internal_format = GL_RGBA16F;
+ }
+ } else if (type == GL_UNSIGNED_SHORT) {
+ if (pixel_format == FORMAT_R) {
+ internal_format = GL_R16;
+ } else if (pixel_format == FORMAT_RG) {
+ internal_format = GL_RG16;
+ } else if (pixel_format == FORMAT_RGB) {
+ internal_format = GL_RGB16;
+ } else {
+ internal_format = GL_RGBA16;
+ }
+ } else if (output_linear_gamma) {
+ assert(type == GL_UNSIGNED_BYTE);
+ if (pixel_format == FORMAT_RGB) {
+ internal_format = GL_SRGB8;
+ } else if (pixel_format == FORMAT_RGBA_POSTMULTIPLIED_ALPHA) {
+ internal_format = GL_SRGB8_ALPHA8;
+ } else {
+ assert(false);
+ }
+ } else {
+ assert(type == GL_UNSIGNED_BYTE);
+ if (pixel_format == FORMAT_R) {
+ internal_format = GL_R8;
+ } else if (pixel_format == FORMAT_RG) {
+ internal_format = GL_RG8;
+ } else if (pixel_format == FORMAT_RGB) {
+ internal_format = GL_RGB8;
+ } else {
+ internal_format = GL_RGBA8;
+ }
+ }
+ if (pixel_format == FORMAT_RGB) {
+ format = GL_RGB;
+ } else if (pixel_format == FORMAT_RGBA_PREMULTIPLIED_ALPHA ||
+ pixel_format == FORMAT_RGBA_POSTMULTIPLIED_ALPHA) {
+ format = GL_RGBA;
+ } else if (pixel_format == FORMAT_RG) {
+ format = GL_RG;
+ } else if (pixel_format == FORMAT_R) {
+ format = GL_RED;
+ } else {
+ assert(false);
+ }
+
+ // (Re-)upload the texture.
+ texture_num = resource_pool->create_2d_texture(internal_format, width, height);
+ glBindTexture(GL_TEXTURE_2D, texture_num);
+ check_error();
glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo);
check_error();
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, needs_mipmaps ? GL_LINEAR_MIPMAP_NEAREST : GL_LINEAR);
+ check_error();
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
check_error();
glPixelStorei(GL_UNPACK_ROW_LENGTH, pitch);
check_error();
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, format, type, pixel_data);
check_error();
+ glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+ check_error();
if (needs_mipmaps) {
glGenerateMipmap(GL_TEXTURE_2D);
check_error();
check_error();
glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
check_error();
-
- needs_update = false;
+ } else {
+ glBindTexture(GL_TEXTURE_2D, texture_num);
+ check_error();
}
// Bind it to a sampler.
++*sampler_num;
}
-std::string FlatInput::output_fragment_shader()
+string FlatInput::output_fragment_shader()
+{
+ char buf[256];
+ sprintf(buf, "#define FIXUP_SWAP_RB %d\n#define FIXUP_RED_TO_GRAYSCALE %d\n",
+ fixup_swap_rb, fixup_red_to_grayscale);
+ return buf + read_file("flat_input.frag");
+}
+
+void FlatInput::invalidate_pixel_data()
{
- return read_file("flat_input.frag");
+ if (texture_num != 0) {
+ resource_pool->release_2d_texture(texture_num);
+ texture_num = 0;
+ }
}
+
+} // namespace movit
projects / movit / blobdiff